使紧密，加强; 收紧

加强；使紧密；拉紧；使更牢固

tightens up───加强；使紧密；拉紧；使更牢固

lighten up───放松，不要生气

tightened up───加强；使紧密；拉紧；使更牢固

brighten up───发亮；变得明亮起来

lightens up───放松，不要生气

lighted up───点亮

straighten up───好转；改正；清理

tightening up───固紧（tightenup的现在分词）

to lighten up───使轻松

important to tighten up the wheels properly, otherwise they vibrate loose and fall off.───把车轮拧紧很重要，否则它们会振动而松脱。

We need to tighten up security at the prison.───我们必须加强监狱的安全性.

Why does China tighten up its visa policies?───为什么中国收紧了签证政策？

Work swiftly, but don't tense up; relax your body and mind and never tighten up.───工作要赶不要急, 身心要松不要紧.

Until this week, every attempt to tighten up the law had failed.───到本周为止，一切旨在严格执法的努力都失败了。

Tighten up the nuts on the cylinder cover.───把气缸盖上的螺母上紧.

I want us to be a bit more sensible this time and tighten up.───我要求我们这次要更加理智、更加严格要求自己。

He say he will take step to tighten up the administration.───他说他将采取措施加强行政管理.

We'd better tighten up the ropes a bit.───我们最好把绳子拉紧一点.

Please hand me the spanner; I've got to tighten up the what's - its - name.───请递给我板手, 我得拧紧这个玩意儿.

The most straightforward way to do so would be to tighten up controlled - foreign - corporation ( CFC ) rules.───最直接了当的办法是加强受控外国公司规则.

Tighten up the packing gland on the swivel.───紧一下水龙头冲管盘根.

This article also put forward proposals on tighten up the management of under artificial feeding.───并对如何加强丹顶鹤的饲养管理提出了具体建议.

Until this week, every attempt to tighten up the law had failed.───到本周为止，一切严格执法的努力都失败了。

It's important to tighten up the wheels properly, otherwise they vibrate loose and fall off.───把轮子拧紧是很重要的，否则它们会因振动松动、脱落。

Don't tighten up your throat, or you will sing badly.───别把嗓子绷得那么紧, 否则会唱得很糟.

He said he would take steps to tighten up the law.───他说他将采取措施使法律更严格有效.

Then tighten up the 4 screws.───然后锁紧那4颗螺丝.