The cleaning necessity of new train tanker of purifying methanol were described.

叙述精甲醇火车槽车启用前进行清洗的必要性。

Fortuity and necessity are not antagonistic.

偶然和必然并不是对立的。

Being a professional actor of necessity means working nights and Sundays.

作为职业演员必然意味着晚上和星期日要工作。

The Necessity of "Five Prerequisites"in College Moral Education

高校德育工作要做到“五到位”

※Necessity and oportunity may make a coward valient. 需要和机会可能使懦夫变成勇士。
※Necessity (or Need) has (or knows) no law. 需要面前无法律。
※Necessity is the mother of invention 穷则变，变则通。
※Necessity knows no law. 铤而走险。
※Necessity never makes a good bagain.Benjamin Franklim, American Pesident——急需难买便宜货。美国总统富兰克林  B
※The best teacher one can have is necessity. 我们能得到的最好教师是“需要”。
※The wise are instructed by reason; ordinary minds, by experience; the stupid, by necessity; and brutes, by instinct. 聪明人循理智办事，平常人照经验办事，蠢人按需要办事，畜生凭本能办事。
※A friend is known in necessity. 患难见友情.
※Necessity and opportunity may make a coward valiant. 需要和机会可以使懦夫变得大胆.

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