derivation
n
1 [U] development or origin (esp of words) 发展; 起源; (尤指词语的)派生
the derivation of words from Latin 词语自拉丁文的派生
a word of French derivation 由法语派生的词.
2 [C]
(a) first form and meaning of a word 词源.
(b) later change of form and meaning 派生的词形和词义
give the derivations of words 指出词语的派生词形和词义.
I'm afraid the cardboard boxes are not strong enough for transport by sea.
我担心这种纸箱,用于远洋运输,不够结实。
Work hard, otherwise you'll be sorry.
努力用功,否则你会后悔的。
Once we detected a planet, we would have to find a way of blotting out the light from its star, so that we would be able to 'see' the planet properly and analyze its atmosphere.