*significance*
意义，重要性，含义
*stain*
M : n 污渍，污迹，染色
v 玷污，染色
*clumsy*
M : adj 笨拙的，不灵活的
拙劣的，不得体的
*microscopic*
M : adj 极小的，用显微镜可见的
*withdraw*
M : 提款，撤退，收回，撤离
E ：hastily / promptly withdraw my hand from his.
*category*
M : 类别，范畴
*acquaintance*
M : 认识，了解，熟人
D ：acquaint
*criterion*
M : （批评判断的）标准，规则，准据
P : according to criterion, by a/the criterion criterion of
fulfill, meet, satisfy criterion
establish, lay down criterion
adopt, apply, use criterion
(plural form - criteria)
*rend*
M ：撕碎，分裂，抢夺
> one student in the room, who was bending over a table, intensely focused on his word.
*bend over* 俯身 *intensely* 紧张地
> sprang to his feet with a cry of pleasure.
*spring to one`s feet* 跳起来
* run towards us* 向我们跑过来
> How on earth did you know that? I asked in shock
*on earth*
M : An intensifier used to emphasize surprise, shock, anger, disgust, etc.
E : How on earth am I supposed to read this entire book in one week?
What on earth were you thinking, driving across the state in the middle of the night?
> Don`t you see that it gives us a fallible test for blood stains
*fallible* 万无一失地
*blood stains* 血迹，血渍
> draw me over to the table at which he had been working.
*draw* move sb