“拧紧”的拼音为：nǐng jǐn...

我用拇指指甲把台灯上的螺钉拧紧了。I used my thumbnail to tighten the screw on my lamp.把盖子拧紧。Screw down the lid fairly tightly.所有的螺钉都拧紧了。All the bolts were fully tightened....

“拧紧”的英语可以翻译为：screw home，screw up，tighten，buck-up，screw down ...