他们开始了一段经济紧缩的过程.They began a process of economic deflation.这个较紧缩的频率范围不适用于烃类.With this restricted frequency range it is not applicable to hydrocarbons.通货紧缩的意思是物价普遍下降, 通常随之而来的是利润降低,就业机会减少.Deflation means falling prices, usu...
The civil servant's expression, however, did not change, not so much as by a flicker.然而，那位公务员的表情还是那样，丝毫没变。He did not so much as stir a finger.他一点力都不肯出.She did not so much as raise an eyebrow.她甚至连眉毛也不抖动一下....
Complement enzymes attack antigens by puncturing the cell membrane.补体酶通过刺穿细胞膜来攻击抗原.Some antigens, or combinations of antigens, are much more potent than others.某些抗原或者联合抗原可比其它抗原作用强得多.There are numerous inherited antigens ...