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加强；使紧密；拉紧；使更牢固
1、up up───向上
2、up───adv.向上；上涨；靠近（某人）；朝……的方向；到（重要地方）；向（国家北部的地方）；成碎片；彻底地；（以便）聚拢；（以便）完结；已结束；起床；（非正式）（不好的事情）发生；公开展示地；（航行）逆风地；n.上升；繁荣；（非正式）走运；adj.向上的；涨的；正在修正的；（骑师）骑着MaDe；（非正式）高兴的；完成的；起床的；prep.向（较高位置）；沿着；在……之上；向……的较高处；到（向往之处）；v.突然做（意想不到的事）；提高……的价格（或数量）；举起
3、make up up up───化妆
4、tightened its grip───握紧了它的手
5、tightened───adj.拉紧的，加固的；v.拉紧；固定；加严（tighten的过去式形式）；使紧密
6、up up───起来
7、tightened requirements───严格要求
8、tightened restrictions───更严格的限制
9、up up up───起来，起来
1、We noticed that the specifications have tightened up in some areas and have been implemented as such.───我们注意到规范在某些领域的要求变得更加严格，也就按照规范实现了。
2、To keep potential foreign troublemakers out of the country, China has tightened up on visa issuance.───为了阻止潜在的麻烦制造者入境，中国收紧了签证的发放。
3、she unlocked the door latch, tightened up her shoulder harness and slid back her seat.───然后她把门闩打开，因为她要离开飞机；
4、Nobody knows, however, how much extra capital gains tax would be collected if the rules were tightened up.───然而，如果政府收紧规定，没人知道会征得多少额外的资本利得税。
5、Laws on gambling have tightened up recently.───DuBo的法律最近变得更加严厉。
6、Thus, policies on school uniforms tend to get tightened up when teachers and the authorities start to feel out of control.───因此，当校服政策有紧缩的趋势时，教师们和当局们开始觉得失控。
7、The ropes have tightened up.───绳子绷紧了。
8、He tightened up the rope a little.───他把绳子绷紧了一些。
9、In 1895 the Bank Note Issue Ordinance tightened up the regulation of banknotes .───1895年制定的《银行纸币发行条例》收紧对纸币的监管。
1、The girl was tightened up inside.
2、He tightened up the rope a little.
3、Laws on gambling have tightened up recently.
4、It has now tightened up its financial procedures.
5、We have tightened up the defence and are winning matches as a result.
6、The law in this area has been tightened up considerably.
7、The government tightened up economic controls.
8、Security was tightened up at the embassy after a number of important files went missing.
9、Immediately his face tightened up and he strode away.