旋钮

shùn shí zhēn zhuàn dòng xuán niǔ

顺时针转动旋钮

turn the knob clockwise

yīn liàng xuán niǔ

音量旋钮

volume control knob

juǎn piān xuán niǔ

卷片旋钮

film winder

tiáo xié xuán niǔ

调谐旋钮

tuning knob

tā zhuàn le yī huì shōu yīn jī xuán niǔ cái zhǎo dào le hé yì de jié mù

他转了一会收音机旋钮，才找到了合意的节目。

He twiddled with the radio knob until he found the right programme.