1. crackdown on 镇压；打击
The Arab League has been trying to convince the Syrian government to ease its violent crackdown on an uprising by demonstrators.
阿盟一直试图说服叙利亚政府放松对反政府抗议者发动的起义的镇压b3@!_6!3~GH-mE~J。

2. briefed on sth. 知情的
In coming weeks, both Amazon and Sony Corp. plan to unveil new versions of their devices, said people briefed on the matter.
据知情人士透露，未来几周，亚马逊和索尼公司都计划发布各自产品的新型号7P%9egW6=plJ~#Frozk。

3. akin to 类似
Once the cable is in place, the elevators would climb with technology akin to that of a ski lift.
一旦缆绳悬挂在空中，太空电梯爬升的技术与滑雪缆车的类似SJ,7mTz9r8JiH)eL6.=。

4. pick up on 察觉到
The children pick up on the mother' worries and depression although she's hiding her feeling about her divorce.
虽然母亲掩饰着自己离婚的情绪，但是她的忧愁和压抑还是被孩子们察觉到了uvo+NlO)PVB.e=6。