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pressure *p mffim (
m, vmm&5kj± )
, beta-'carotene noun [U] a substance
found in carrots and other plants, which is needed by humans * (5- #]
bM
'beta decay noun [sing] (physics
#j) the breaking up of an atom in which an electron
is given off * p M. $
( m)
betake /bTteik/ verb (be-took /-tuk/, betaken /-’teikan/) [VN +adv./prep.]
(literary) ~ yourself to
go somewhere HU®, A ( S&L ) : He betook himself to his room,
'beta test noun a test on a new
product, done by sb who does not work for the company that is developing the
product nm ( ® MM A n fr A ft W M ft ) — compare alpha test ►' beta-test verb [VN]
'beta version noun [usually sing.] the
version of a new product, especially computer software, that is almost ready
for the public to buy or use, but is given to a few customers to test first ( ft-t rfr iM )
PJ&, Mftfc-
betel /'bi:tl/ noun [U] the leaves of a
climbing plant, also called betel, chewed by people in
Asia 'betel
nut noun the slightly bitter
nut of a tropical Asian palm, that
is cut into small pieces, wrapped in betel leaves, and chewed 17 W A bete noire /,bet 'nwai(r)/ noun
(pi. betes
noires /,bet
'nwai(r); NAmE also 'nwairz/) (from French) a person or thing
that particularly annoys you and that you do not Hke#mRlftA( j«tl ) be tide /bTtaid/ verb ffflWI see woe be token /bi'taukan; NAmE
-'too-/ verb [VN] (literary) to be a sign of sth MA; A A: a
clear blue sky betokening a fine day ® gMA
be tray /bTtrei/ verb
[VN] 1 ~ sb/sth (to sb) to give information
about sb/sth to an enemy AH; MM ( #13?) : For years they had been
betraying state secrets to
o He was
offered money to betray his
colleagues. A
|WJ^0
2 to hurt sb who trusts you, especially by not being loyal or faithful to them A • ■ ■ A
&: She felt
betrayed when she found out
the truth about him. MA o She
betrayed his
trust over and over again.
{g® 0 o I have never known her to betray a confidence (= tell other people
sth that should be kept secret).
o note at cheat 3 to ignore your principles
or beliefs in order to achieve sth or gain an advantage for yourself fffk ( ) : He has
been accused of betraying
his former socialist ideals. A A ASiL 4 ~ sth/yourself to tell sb or make them aware of a piece
of information, a feeling, etc., usually without meaning to ( ftM A )
ffiUftE, EEEI GIVE AWAY: His voice
betrayed the worry he was
trying to hide. ® (ft A "If It; A A T F*3 A (ft £L o 0 She was terrified of
saying something that would make her betray herself (= show her feelings
or who she was). Alt7 i flWlo
be tray al /bi’treial/ noun
[U, C] the act of betraying sb/sth or the fact of being betrayed ( ® j£:
a sense/a feeling/an act of betrayal ®J±lA/ ® pfMlft/ii ;
fUA A Of saw her actions as a betrayal of my trust. o the many
disappointments and betrayals in his
life
-fife— t
be troth al /bi'traudl; NAmE
-'trou-/ noun ~ (to sb) (formal or old-fashioned)
an agreement to marry sb #jf gj;
UM BOGS ENGAGEMENT
be-trothed /bTtrauQd; NAmE
-'trou-/ adj. (formal or old-fashioned) 1 ~ (to sb) having promised to marry sb iTT(#(ft EHTS ENGAGED 2 sb’s betrothed noun [sing.] the person
that sb has promised to marry BiT^fWA;
better (Nf
/'beta(r)/
adj., adv., noun, verb m adj. (comparative of good
* good (ft ®SI&) 1 of a higher standard or less poor quality; not as
bad as sth else