animals compete or perform It H; A'ifC: horse trials

► DIFFICULT EXPERIENCE M'tfcftp 5 [C] ~ (to sb) an experi­ence or a person that causes difficulties for sb

A;        the trials and tribulations

of married life       o She was a sore

trial to her family at times.

iTTHTTi trial and ‘error the process of solving a problem by trying various methods until you find a method that is successful        Children learn to use

computer programs by trial and error. JLS^

**&$mm*mm:

u verb (-SI-) [VN, V] {BrE) to test the ability, quality or performance of sth to see if it will be effective or

successful?!)^ ( MS,  Sft

trial balloon noun something that you say or do to find out what people think about a course of action before you take it Wife (   )

.trial 'run (also .test 'run) noun a test of how well sth new works, so that you can see if any changes are necessary ( ) fD'frWfk, Wu

triangles =~MW

isosceles triangle   right-angled triangle (BrE)

E.MW           right triangle {NAmE)

mmtmw

tri-angle 0”* /'traiaeggl/ noun 1 a flat shape with three straight sides and three angles; a thing in the shape of a triangle EEMW; ELM WWff: {BrE) a right-angled triangle MM LE. MW 0 {NAmE) a right triangle MM EL MW 0 Cut the sandwiches into triangles. JE 0j] ?n MJ&EEM W „ 2 a simple musical instrument that consists of a long piece of metal bent into the shape of a triangle, that you hit with another piece of metal EE M ( fl %. #g ) — picture o page R8 3 a situation involving three people in a compli­cated relationship EE M A % : a love triangle EL.M&%k

—                 see also eternal triangle 4 {NAmE) = set square tri-angu-lar /traTaer)gjala(r)/ adj. 1 shaped like a

triangle EE M ; ELMWtf] 2 involving three people or groups ffiRELAffi; EE^fifft; a triangular

contest in an election

tri-angu-la-tion /trai.aerjgju'leijn/ noun [u] {technical A if?) a method of finding out distance and position, usually on a map, by measuring the distance between two fixed points and then measuring the angle from each of these to the third point (  )

Hlii, Hist

tri.angu lation point noun = trig point tri-ath-lon /trai‘ae01an/ noun a sporting event in which people compete in three different sports, usually swim­ming, cycling and running ^ S  ; f AEil

—                 compare biathlon, decathlon, heptathlon,

PENTATHLON, TETRATHLON tri-ha! /‘traibl/ noun, adj.

» adj. [usually before noun] connected with a tribe or tribes

SPIglft;    tribal art       o tribal leaders

mm

2157       trSceratops

■ noun a member of a tribe, especially in S Asia ( At!$3

tri bal ism /'traibalizam/ noun [u] 1 behaviour, atti­tudes, etc. that are based on being loyal to a tribe or other social group ^        ;              ;        2 the

state of being organized in a tribe or tribes q^rjfJJl;

tribe /traib/ noun 1 (sometimes offensive) (in developing countries) a group of people of the same race, and with the same customs, language, religion, etc., living in a particular area and often led by a chief gp : tribes living in remote areas of the Amazonian rainforest M

2 (usually disapproving) a group or class of people, especially of one profession (       ) -ik ( A ) , -W ( A ) ,

( A ) •• He had a sudden outburst against the whole tribe of actors.  A #   3 {biology

4) a group of related animals or plants ( Efa %} $J ) f$, M: cl tribe of cats 4 {informal or humorous) a large number of people ASĄ, Affi?, Attfc ( A ) : One or two of the grandchildren will be there, but not the whole tribe. A#A 4ASPS,

^jAo

tribesman /‘traibzman/, tribeswoman /‘traibz- woman/ noun {pi. -men /-man/, -women /-wrnirn/) a member of a tribe

tribes-people /‘traibzpirpl/ noun [pi.] the people who belong to a particular tribe

tribu-la-tion /,tribju’leijn/ noun «[C, U] {literary or humorous) great trouble or suffering H, ; W 1$.; iff 2t; : the tribulations of modern life JJE ft Ł til

tri-bu-nal /trai’bjuinl/ noun [C+sing./pl. v.] a type of court with the authority to deal with a particular problem or disagreement #Łi]?Łig; ijjjff: She took her case to a tribunal. 0 a disciplinary

tribunal QWfefiL — see also industrial tribunal

trib une /‘iribjuin/ noun 1 an official elected by the people in ancient Rome to defend their rights; a popular leader

#J ^ ffh 2 a raised area that sb stands on to make a speech in public ( &JF$ijt!‘K) )

tribu-tary /‘tribjatri; NAmE-teri/ noun {pi. -ies) a river or stream that flows into a larger river or a lake ( iffiAA ) jŁ$ft ►tribu-tary adj. [only before noun]: a tributary stream

trib ute /‘tribjuit/ noun 1 [u, C] ~ (to sb) an act, a state­ment or a gift that is intended to show your respect or admiration, especially for a dead person (

IKl )  ftAtherfuneral

her oldest friend paid tribute to her life and work,

tl±,

ffa 0 o This book is a fitting tribute to the bravery of the pioneers.        AMIAASff  <>

floral tributes (= gifts of flowers at a funeral)

2 [sing.] ~ to sth/sb showing the good effects or influ­ence of sth/sb (        ) WM,            His

recovery is a tribute to the doctors’ skill.      AAM

as T # E ^ ig E A o 3 [U, C] (especially in the past) money given by one country or ruler to another, especially in return for protection or for not being attacked (

’tribute band noun a group of musicians who play the music of a famous pop band and copy the way they look and sound

trice /trais/ noun  in a ‘trice very quickly or

suddenly ft US A         |t0; MM,m SKI in an

instant : He was gone in a trice, ft 0^ A ih] fife ti fk #E

JIT o

tri-ceps /‘traiseps/ noun {pi. tri-ceps) the large muscle at the back of the top part of the arm EE AM —compare BICEPS

tri-cera-tops /traTseratnps; NAmE -ta:ps/ noun {pi. tri- cera-tops or tri-cera-topses) a large dinosaur with two large horns and one small horn on its very large head

LEM (Sf) it