tighten vt.& vi.

To make or become nervous or upset.

使紧张，使慌乱使或变得紧张或困惑

To bring into close association or union.

使紧密结合，使成整体

Any of various devices used to fasten something securely.

紧握之物用来紧紧扣住东西使其安全的装置

I can' t concentrate with you breathing down my neck.

你这样紧紧盯着我, 使我精神无法集中.

Fear froze the pilot to the controls

恐惧使飞机驾驶员紧紧抓住操纵杆。

Press hard on the two surfaces, to make them stick together.

用力挤压这两面，使它们紧紧粘在一起。

tighten or fasten by means of screwing motions.

通过连接动作来使变紧或扣紧。

Shoes that are too tight deform the feet.

太紧的鞋使脚变形。

The scrotumtightening sea.

使人的睾丸紧缩的海。

Continuous arguing always winds me up.

连续的争论总使我紧张。

(cause a military aircraft to)take off suddenly

（使军用飞机）紧急起飞.

To make intense, excited, or nervous.

使…热切、兴奋或紧张

I closed up the space between the lines of print.

我使印刷的行距靠紧些。

close(sth)up;;come or bring(sth)closer together

使靠紧、靠近或靠拢

A high-pressure job.

使人高度紧张的工作

He closed his jaws on the bones and crunched.

他咬紧骨头，使劲地嚼。

the health-care exigency.

出现紧急情况使要报警。

To connect with a tongue-and-groove joint.

楔紧用楔形部件使密接