for一般接名词,to是接动词原形,to作介词的时候是to do sth。下面整理了二者的区别用法,来看一下吧! 1、for的用法归纳 一、(表目的)为了。 二、(表利益)为,为了。 三、(表用途)用于,用来。 四、为得到,为拿到,为取得 五、给(某人),供(某人)用。 六、(表原因、理由)因为...
After an infection, certain T cells and B cells that can recognize the virus stick around for a long time. If they are ever re-exposed to the virus (or other pathogen) again, these special memory cells recognize it quickly and start to respond.This...
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