1. be committed to doing sth. 致力于
China was committed to pursuing a low-carbon economy despite the tremendous difficulties that it would face.
无论面临多大的困难，中国都会致力于追求低碳经济.n]_%rs5!H#+@4rUhN。

2. straw sales 代理销售
The ATF traced large numbers of crime guns back to this store and some sales were identified as “straw sales” in a 2007 press release from the U.S. Attorney’s Office in the Eastern District of Louisiana.
烟酒枪炮及爆裂物管理局追查到，大量犯罪枪支都来自该店，其中部分交易还曾在2007年被路易斯安纳东区的检察官办公室发布的新闻稿认定为“”

3. hooked on sth. 对……上瘾；沉迷于……
People can get hooked on Internet searching, online dating, Web shopping, porn sites, on-line gambling, or even checking their email.
人们会沉迷于网络搜索，在线约会，网上购物，色情网站，线上赌博，甚至是查收电子邮件fuw9GRPPaK。

4. shut down 关闭；封闭
Police shut down a local highway for a few hours out of concern the suspect had escaped through a back door.
警方一度担心嫌犯已经从后门逃走，因此将当地一条公路封闭了几个小时9qnnXd1i87uqZ!ZCF。