重点讲解:
1. weed out 清除;剔除;淘汰;
He is keen to weed out the many applicants he believes may be frauds.
他急于剔除那些他认为是冒牌货的申请人 。
2. pick up 得(病);染上(疾病);
They've pi cked up a really nasty infection from something they've eaten.
他们因吃错东西而得了很严重的感染症 。
3. hold up (论点、理论等)经受得住检验;
I'm not sure if the argument holds up, but it's stimulating.
我不能肯定该论点是否经得起检验,但它很有新意 。
4. either way (两种情况中)不论发生哪一种情况;
The sea may rise or the land may fall; either way the sand dunes will be gone in a short time.
可能会出现海平面上升或陆地下沉:不论发生哪种情况,沙丘都会在短时间内消失 。
n. 变化,变动,变种,变奏曲