Salt is a preservative for meat.盐是肉类的防腐剂.Every piece of timber was planed, cut to size and stained with cedar preservative.每根木材都被刨平了，切割成一定尺寸，并涂上了雪松防腐剂。Clearly aqueous preservative systems must possess a fixation mechanis...
He never could hold down a job.他从来都保不住自己的工作。Despite her handicap, Jane is able to hold down a full-time job.简尽管有生理缺陷，却能够保住一份全职工作。We must hold down the tents because of the strong wind.风很大,我们必须把帐篷固定好....
有外星人拜访了他们。They have been visited by creatures from outer space.吉姆在这部电影里是个外星人.Jim is an alien in this film.有人见到过外星人 吗 ?Has anybody ever seen any beings from outer space?...
The program will then calculate and display the ciphertext.该程序将然后计算并显示密文.This will clear the form of a string of figures ciphertext.这样将明文变成形式为一串数字密文.The following is a notation for relating plaintext, ciphertext, and key...
On farms the fox is considered vermin and treated as such.在农场里狐狸被当成有害动物来对待。Farmers regard foxes as vermin.农夫把狐狸看成是祸害.Foxes were traditionally regarded as vermin.人们传统上都认为狐狸是有害的动物....