He tight lipped when asked about Artest constantly yammering in his ear whenever they play.

Her arms tightened about his neck in gratitude...

她充满感激，把他的脖子搂得更紧了。

The police are tightening up on under-age drinking.

警方正在采取更加严厉的措施对付未成年人饮酒的问题。

to tighten a lid/screw/rope/knot

拧紧盖子 / 螺钉；绷紧绳子；打紧结

He knows he has considerable support for his plans to tighten his grip on the machinery of central government...

他清楚有相当多的人支持他对中央政府机构加强控制的计划。

Sofia's throat had tightened and she couldn't speak...

索菲娅喉咙哽住了，说不出话来。

She tightened her grip on his arm.

她抓他的手臂抓得更紧了。

to tighten security

加强安全措施

His mouth tightened into a thin line.

他的嘴抿成了一道细缝。

They have tightened security along the border...

他们加强了边境的安全工作。

The United States plans to tighten the economic sanctions currently in place...

美国计划加大现有经济制裁的力度。

Laws on gambling have tightened up recently.

有关赌博的法律最近变得更加严厉。

The nuts weren't properly tightened and the wheel came off.

螺母没拧紧，轮子脱落了。

The anchorman flung his whole weight back, tightening the rope...

那个压阵队员使尽了全身力气往后拽，把绳子拉得紧紧的。

I used my thumbnail to tighten the screw on my lamp...

我用拇指指甲把台灯上的螺钉拧紧了。

Luke answered by tightening his grip on her shoulder...

卢克的回应就是把她的肩头抓得更紧了。

Then tighten up the 4 screws.

然后锁紧那4颗螺丝.

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.

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.

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.

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。