a) N:1.相互关系,相关2.同感；亲密。 ? 例句：
? Syn: Sympathy, Empathy, Support, Affinity.
Muzzle: (n.)L.2 （过去式：muzzled过去分词：muzzled现在分词：muzzling复数：muzzles） Slowly the wolf raised his muzzle.
a) N:.1.(四足动物的)鼻口部 2.(防止动物咬人的)口套 3.枪口, 炮口 ? 例句：
b) Vt: 1.给(狗等)戴口套 2.使缄默, 钳制…言论
? 例句：The newspapers were effectively muzzled by strict censorship laws.
严厉的新闻审查法有效地使那些报纸沉默了下来。 ? Syn: Silence, Gag, Hush, Quiet, Suppress, Stifle. Mythology: (n.)L.8 （复数：mythologies）
He gave me a set of books called Greek Myth——mythic——mythologies, that′s it !
a) N:1.神话学 2.神话(总称) 3.虚构的事实；错误的观点 ? 例句：He studies Greek and Roman mythology.
他研究希腊和罗马神话。 ? Syn: Myths, Folklore, Tradition. Naive: (adj.)L.8
We don′t expect you to be so childish as to lock me up in my room ,call the police ,or anything so na?ve as that!
a) Adj: 1.幼稚的; 无经验的; 单纯的 2.天真的; 轻信的 ? 例句：It's naive of you to believe he'll do what he says.
相信他会言行一致, 你未免太单纯了。 ? Syn: Myths, Legends, Folklore, Tradition. Nanosecond: (n.)L.15
First built in 1948 ,these clocks generally use atoms of cesium , a silvery white metal and are accurate to within a few nanosecond a day.
a) N:十亿分之一秒 ? 例句： Narrative: (n.)L.14
（复数：narratives）
At some point ——I have no idea when ——I put the phone down and started typing again, filing the copy to Washington where Trott assembled all the pieces into a more or less coherent narrative.
a) N: 1.记叙文; 故事 2.叙述, 讲述; 叙述部分 3.叙事技巧 ? 例句：His trip through the world made an interesting narrative.
他周游世界的旅行是个很有趣的故事。 b) Adj:叙述的; 叙事体的
? 例句：He was a writer of great narrative power.
他是一位颇有记述能力的作家。
? Syn: Story, Tale, Account, Description, Plot. Nausea: (n.)L.11
He swallowed hard and choked back the nausea.
a) N:作呕;恶心;反胃
? 例句：Early pregnancy is often accompanied by nausea.
怀孕期常有恶心的现象。
? Syn: Sickness, Vomiting, Queasiness. Naval: (adj.)L.15
Naval Observatory in Washington ,D.C.
a) Adj:海军的
? 例句：He took part in a great naval battle.
他参加了一次大海战。
? Syn: Marine, Nautical, Maritime, Seafaring, Sailing. Navigator: (n.)L.15 (复数：navigators)
A navigator at sea or in the air ,plotting location by satellite ,relies on a time signal accurate to within a single millionth of second.
a) N:1.(船或飞机的)领航员 2.（飞机、船舶等上的）航行者，航海者，驾驶员 ? 例句：
? Syn: Guide, Pilot, Direction-finder, Route-finder. Necessarily :(adv.)L.1
a) Adv:1.必要地, 必需地 2.必定地; 必然地; 不可避免地 ? 例句：A voter must necessarily be no younger than eighteen.
选民必须在18岁以上。
? Syn: Unavoidably, Essentially, Automatically, Inevitably. Necessary: (adj.)L.3 （复数：necessaries）
With the average cost of prison construction running around $50,000 per bed, it would cost more than $6 billion to build the necessary cells.
a) Adj:1.必要的; 必需的 2.必然的; 不可避免的
? 例句：It took me a year to get the necessary materials together.
我花了一年的时间才把所需要的资料组织好。 b) N:1.必需品
? 例句：He has enough money to obtain the necessaries of life.
他有足够的钱购买生活必需品。 ? Syn:
Essential,
Needed,
Required,
Compulsory,
Obligatory, Indispensable.
Needy：（adj.）L.13
Habitat began buildings house in Americans for needy people who could handle a small down payment about $65 monthy.
a) Adj:贫穷的;贫困的
? 例句：The previously free (= not paid for) distribution of text books will now be confined to students who are needy.
以前免费发放课本， 现在只给贫困学生。 ? Syn: Deprived, Disadvantaged, Poor, In need.
Nerve: (n.)L.11 （过去式：nerved过去分词：nerved现在分词：nerving复数：nerves）
As the initial shock began to wear off ,the nerve endings became more sensitive ,causing even greater pain.
a) N:1.神经 2.神经过敏; 神经紧张 3.勇气; 胆量 4.鲁莽；冒失；厚颜 ? 例句：
b) vt. & vi：鼓足勇气；振作精 ? 例句：
? Syn: Courage, Bravery, Spirit, Bravado, Guts, Daring. Nest: (n.)L.4 （过去式：nested过去分词：nested现在分词：nesting复数：nests）
Form her nest in the oak tree the Nightingale heard him and she looked out through the leaves and wondered.