to get
sb’s attention before changing the subject or asking them to do sth (改变话题或要对方做某事前，引
起对方注意）喂，哎，晦：Mnv, 〖istentowhatshe’s saying•嗨，听听她居讲什么。◊ Nbw, the next point is
quite comptex请注意，.下一点非常复杂。◊ Mw come and sit down.喂，过来坐，下。.◊ iVow fet
me thfnfc … 嗯，让我想想…IHHin
(every) now and a'gain/'then from time to time; occasionally 有■时；偶尔；.时常： Every now and again
she checked to see if he was still asZeep.她隔一会儿就看看他是否还在睡觉。now for 'sb/ sth used when turning to a fresh
activity or subject (转向新的活动或话题）：And now/or some traveZ news. 下面播报几条旅游新闻。，now, 'now (also ,now 'then) used to show in a mild way that you do not
approve of sth (温和地表示不赞同）5■是，合啦：Mnv then, that’s ■enough noise.好啦，这够吵了。now …now ... at one time …at another time …时而…时而…：Her moods fcept changing—now happy, now sad.她的情绪总是变幻
不定 时而欢喜，忧伤。（it’s) ,now or'never
this is the only opportunity
sb will have to do sth 机不
可失勿失^■机’now
then 1
= now, now 2 used when making a .suggestion or an offer (提出建议或提
供帮助）喂，’听我说：Mnv then, who wants to come/or a waZfc?喂，想出来走走?（ 'now what? {informal) 1 (also what is it now?) used when you are
annoyed because sb is always asking questions or interrupting you (对某人的不断提问或打扰感到厌烦）又怎么了：
Yes,
but Dad ...，‘iSTow what?’ “是的，可是爸爸… 又怎么了？ ’ T .2 used to say that you do
not know what to do next in a particular situation (;不.知道下一 步该做什么）现在该怎么办
• conj. ~ (that) ... because the thing
mentioned is happening or has just happened 既然；由于：Now that the kids have left home weVe got a lot of extra space. 孩子们都离开家了，我们住着就更宽绰了。
now-adays /'nauadeiz/ adv. at the present time, in
contrast with the past 现:今；现在；■自前：JVovvadays most fcfds pre/er wafc/ii’ng IV fo
reading.现在未多数孩子
都喜欢看电视而不喜欢读书。
llO-where O^r /'nauwe0(r); NAmE 'nouwer/ (also 'no place especially in
not in or to any place 关处i;哪里都禾：This animal is /ound in AiistraZia，cmd
nowhere.eke.这种动物生,长在澳
大利亚，•.别处没有。.◊ rhere was nowhere/or me to .sit. 我无处亩坐。◊‘Where are you going t/iis weekend?’
Nowhere甲ec^’ “这个周末你打算去哪儿”n/‘没什么
地方.可去”.，.” .◊ Wowhfre is. the
pjQPect 〇/government
poZicy more apparent than in a^ricuimre.奴府的政策对
农业的影响最兔显著。IMI get/go nowhere | get
sb nowhere to
make no progress or have no success; to allow sb to do this (让某人.）毫无进展：We discussed ft aH momfng but got nowhere•我们就此事讨论了一上午，
可是毫无进展。◊ raZ/dng to him vWH get you nowhere. 和他谈话你会一无所获。nowhere to be
'foundAseen |
nowhere
in 'sight impossible
for anyone to find or see 不可能找到（或看见）：77ie chfidre/rwere nowhere to be seen.根本看不到孩子们在哪儿。◊ A peace settlement
is now/iere in sight. (= is not likely in the near future).近期内看不到和平解决的可能。一more at lead1 V., MIDDLE n., NEAR adv.
^o-'win
adj. [only before noun] (of a situation, policy,
etc. 情形、政策等）tliat will end badly
whatever you'decide to do 终将失_：的_;无望取胜的：Wcare^pnsfdering the options available to us in this no-win
situation.
胜无望的情形下，我彳f]在考虑有什么选择。
'now-now adv. {SAfrE, informaf) 1 within a short period of time — 会儿；立刻：be with you now-now.我1 H 上就来。2 a short time ago 刚刚；刚才：She left now-now.她刚走旮
nowt /naot/ pron. (BrE, dialect, informal) nothing ;没 有什么：r/iere’s nowt wrong Zt.这没什么错。
nox-ious /'nDkJas; NAmE 'na:k-/ adj. (formal) poisonous or harmful有毒的；有害的：noxious 士mes备毒烟雾
noz-zle
/'nozl;
NAmE 'na:zl/ noun a narrow piece that is
attached to the end of a pipe or tube to direct the stream of liquid, air or
gas passing through.管口；喷嘴
| 1365 nuclear-free
nr abbr. {Br£) near (used, for example,
in the address of a small village)靠近（用于小村庄等的地址中）：Howden, nrGooZe靠近古尔的豪顿村
NRA
/,en
a:(r) 'ei/ abbr. National Rifle Association (a
NRI
/,en a:r 'ai/ abbr. (
NSU /,en es 'ju:/ abbr. non-specific
urethritis nth /en0/ adj. {informal) [only before noun] used when you are
stating that sth is the last in a long series and emphasizing how often sth'has
happened，’！某事已发生
多次，并强调其频繁性）第n个的，第n次的：ft’s the nth rime I’ve
ejcpZained it to you.这件事我已经■向你解释
过无数遍了。iR?! to
the nth 'degree extremely; to an extreme degree极端地；非常地；极大程度上
NTSC
/,en
ti: es 'si:/ noun [U] {technical ^ i§) a television
broadcasting system that is used in
nu-ance /'njurains; NAmE 'nu:-/ noun [C, U] a very slight difference in
meaning, sound, colour or sb^ feelings that is not usually very obvious (意义、声音、颜色、
感情等方面的）细微差别：He watc/ied her/ace interrrty to catch every m/ance 〇/expression•他认真遍注视着她品
脸，捕捉每一丝细微的表情变化。
nub /nAb/ noun [sing.] the ~ (of sth) the
central or
nu-bile /'njuibail; NAmE 'nu:-; 'nu:bl/ adj. (of a girl or young woman 女孩或年轻女丰）sexually attractive 性感
的;迷人的
Nu-buck
/'njuibAk;
NAmE 'nu:-/ noun [U] a type of leather that has been
rubbed on one side to make it feel soft like suede正绒面革（单面打磨的软面革） nil-dear /'nju:kli0(r); NAmE 'nu:-/ adj. [usually before noun]
1
using, producing or resulting from nuclear energy 原子能的；核能的：a nudear power
station核电站◊ t/ie nuclear industry ^ X ik 0 nuclear-powered submarines 2 connected with weapons
that use
nuclear energy 核武器的：a nuclear weapon/bomb/ missfZe 核武器；核弹；核导弹◊£! nuclear
explosion/ attack/war O the country^ nuclear
capability (=； the fact that it has
nuclear weapons) 这个国家的核力量◊ nuclear capacity
(= the number of nuclear weapons a country has)核會3 (p/7y5/cs 物）of the nucleus (= central part) of an atom 食手的；遠子 核的：_ nudear parrides 核粒子◊ a midear reaction 核 反应
.nuclear
'energy (also .nuclear power) noun [U] a powerful form of energy produced by
converting matter into energy splitting the nuclei (=
central parts) of atoms. It is used to produce electricity..核能；
原子能 ：.
■
nuclear .family "押/7, (fedi.n/ca/
术语）a f注mily that consists of -
father, mother and children, when it is thought of as a unit, in society 核心家庭，/丨、家庭（.R包
括父每和_考.).，一
compare
extended family .nuclear 'fission noun [u] = fission(I)
.nuclear-'free
adj. [usually before noun]
(of
a country or a region:掛家’或 区）not having or allowing nuclear
energy, weapons or materials 无核‘的：a nuclear-free zone免核区