保存得太久的食品会变坏,是因为受到酵母菌, 霉菌和细菌的侵袭.Food which is kept too long decays because it is attacked by yeasts, molds and bacteria.防止啤酒变坏的主要方法是用纯酵母菌株发酵.The principal methods of avoiding spoilage are the use of pure yeast strains as ...
Councilman Theron, you found yourself needed for once.赛隆议员, 你终于发现自己派上用场了.Theron always scolds his servant with the four - letter words.西伦总是用下流话骂他的仆人.'Professor Theron,' he began, 'I'm very pleased to ...
There’s something cowardly and ignoble about such an attitude.这种态度有点怯懦可鄙。They felt he had been cowardly in manipulating the system to avoid the draft.他们觉得他太没种，居然钻漏洞逃避服役。...a cowardly act of violence.懦弱的暴力行为That was sport...