It was necessary, therefore, to invent instruments that neither slumbered nor slept.
因此，有必要發(fā)明一種儀器，既不打盹兒，也不睡覺。
新概念英語第四冊
Lesson 42 Recording an earthquake
?? 句中詞匯解析
從本句中提取的重要詞匯
adj. 必要的;強(qiáng)制的;必然的;不可避免的;
n. 必需品;
?? necess必要 + ary 表示有...性質(zhì)的， → a.必要的；必然的
"Vitamin D is necessary to aid the absorption of calcium from food."
從食物中吸取鈣需靠維生素D的幫助。
近義：indispensable, inevitable, mandatory, needful, obligatory, obliged
反義：needless, pointless, profitless, purposeless, redundant, reiterative
adv. 因此;所以;故;乃;
?? there這樣+fore無實(shí)義 → 因此，所以
"He lost his health, and therefore his difficulties increased."
他身體虛弱, 因此更增加了他的困難.
近義：hence, hencewith, hereupon, appropriately, avaunt, properly
vt. 發(fā)明，創(chuàng)造;虛構(gòu);
?? in(upon)+vent(come)→發(fā)明；虛構(gòu)
"We have to invent a new method for sneaking prisoners out without being noticed by the guards."
我們必須想出新的辦法使囚犯們偷偷溜出去而不被看守發(fā)現(xiàn).
近義：improvise, make, noodle, vamp, coin, adlib
反義：recopy, reduplicate, replicate, reproduce, trace, transcribe
neither
['nie?]
adj. （兩者）都不的;
pron. 兩者都不;
adv. 兩個(gè)都不;既不…也不;
conj. 也不;既不;
?? n(not)+either→既非；皆不；兩者都不
"Neither party is willing to compromise and herein lies the problem."
雙方都不愿意妥協(xié)，問題就在這里。
近義：no, either
反義：likewise, moreover, too, withal, besides, then