拧开

shì zhe nǐng kāi luó sī bǎ nà ge xiǎo wán yì r chāi xia lai

试着拧开螺丝，把那个小玩意儿拆下来。

Try and undo the screw to get the whatsit off.

yào qī zhè shàn mén nǐ děi bǎ luó sī nǐng kāi xiè xia bǎ shou

要漆这扇门，你得把螺丝拧开，卸下把手。

You'll have to unscrew the handles to paint the door.