tighten up

基本解释

His efforts to tighten up quality control led to a commercial coup.
他努力加强质量把关，赢得了巨大的商业成功。
This is why there is such high demand for DB2 experts who can tighten up data access controls.
这是对能够加强数据访问控制的 DB2 专家具有如此高的期望的原因。
Even so, Mr. Summers, who, before the crisis broke out, spoke and wrote about the need for greater financial regulation, has not resisted the efforts to tighten up on hedge funds like Shaw.
即便如此，萨默斯——在这场危机爆发前，他一直通过发表演讲和撰写文章的方式，强调加强金融监管的必要性——并没有阻止旨在加强对冲基金监管的努力。

So that would mean that the Fed should be raising interest rates to try to tighten up the economy and bring the inflation rate down.
所以，这意味着,美联储应该提升利率,以试图加强经济,并且将通货膨胀率降低。
耶鲁公开课 - 金融市场课程节选

So they're asking them to increase their capital requirements and tighten up their lending criteria.
WHITEHOUSE: President Obama Closes Forum on Jobs and Economic Growth
Mexican officials insist that attempts to tighten up their anti-drugs campaign have long been under way.
ECONOMIST: Drugs in the Americas
Get them involved in reviewing operational processes and eliminate or tighten up inefficient ones.
FORBES: Operate For Survival And Plan For Success