You can't start drilling after dark, everyone knows that.

天黑以后是不能钻洞的，这谁都知道。

Belarus is starting joint air force drills with Russia.

白俄罗斯开始与俄罗斯进行联合空军演习。

He fetches the drill, takes the hook, stands up on the stool, and starts drilling.

他拿来电钻，还有钩子，站到凳子上开始钻洞。

Let's, uh... start the dentist's drill.

那我们就开始吧。

Here's Dentist Dr Andrew Parkman, describing how some patients feel when they come to sit in his consulting chair: We kind of notice people as soon as the drill starts up.

牙医安德鲁·帕克曼博士描述了一些病人坐在他的咨询椅上时的感受: 钻头一启动，我们就会注意病人。