twiddle
verb [ I or T ] uk/ˈtwɪd.əl/ us/ˈtwɪd.əl/
（尤指无聊地反复用手指）摆弄，捻弄，旋弄
to move something repeatedly between your fingers, especially without any purpose
She was twiddling (with) a pencil/her hair. 她在摆弄铅笔／头发玩。
Twiddle a dial/knob on a radio in the city and you may hear voices speaking Spanish, Chinese, Portuguese, or Russian. 在这座城市里，如果旋弄收音机的旋钮，你可能会收听到西班牙语、汉语、葡萄牙语或俄语。
Idiom
twiddle your thumbsidiom （等待之际）闲着无聊
to do nothing for a period of time, usually while you are waiting for something to happen
I arrived early for the meeting so I was twiddling my thumbs for half an hour. 我开会来早了，百无聊赖地等了半小时。
twiddle
noun [ C ] mainly UK uk/ˈtwɪd.əl/ us/ˈtwɪd.əl/
摆弄，捻弄;旋动，扭动
an act of turning something with the fingers
At the twiddle of a knob the operators can focus on a tiny amount of airspace or scan the whole area. 只要旋动旋钮，操作者就可局部观察一小块领空，或者扫描整个区域。