Mock not a cobbler for his black thumbs.

莫笑皮匠黑。

He’s all thumbs when it comes to fixing machines.

要说到修机器，他可真是笨手笨脚。

He pinched the leaf between his thumb and forefinger.

他将叶子捏在和食之间。

This glove has a hole in the thumb.

这只手套的大处有个洞。

I'm going to stick out like the proverbial sore thumb.

我将像谚语中所说的伤痛那样与众不同。

There is a hole in the thumb of his mitten.

他的手套的上有个洞。

I press the thumbtack into the board with thumb.

我用大将图钉按在木板上。

The base of the thumb is where it joins the hand.

的起点是在与手掌接合处。

A photograph shows one of the crowd thumbing his nose at the speaker.

有张照片上显示一位听众对讲演人做出不屑一顾的动作。

That alone will challenge old rules of thumb about the relative riskiness of emerging-market debt.

仅凭这一点，就会挑战关于新兴市场债务相对风险的传统经验法则。

I'm all fingers and thumbs today.

今天我手脚不灵。

Opposition in an important movement of thumb, for thumb opposes other fingers in many types of prehension.

摘要对向动作是大的一个重要动作，它帮助大完成多数的握执动作。

As a rule of thumb you need a litre of paint to every 12 square metres of wall.

根据经验粗算一下，每12平方米墙面需要一升涂料。