She typed an original and two carbons.她用打字机打出了原件及两份副本.He inserted the paper and two carbons.他放入了那张纸和两张复写纸。Isolable carbocyclic compounds contain seven or fewer carbons in the cycle.可分离的碳环化合物环内含七个或七个以下的碳....
一旦杂质沉淀下去，油就可以分级了。Once its impurities had settled, the oil could be graded.将硫酸盐加入该溶液会产生沉淀.Adding sulphate to the solution will give a precipitate.渣滓沉淀在容器的底部.Dregs settled at the bottom of the container....
Theresa was struck by her own lack of forethought...特蕾莎强烈意识到自己事先太欠考虑了。The headstrong impetuous man rushed into things without forethought.这个顽固的莽汉,不预先考虑,仓促行事.In life, as in chess, forethought wins。人生如下棋,多谋得胜利。With a littl...