Are you giving me a thumb's up or a thumb's down? I can't tell.

你是鼓励我还是鄙视我 我看不出来。

A rule of thumb is a general estimate.

一则经验法则是一种大致的估计。

You know, here's a good rule of thumb.

这是一个很好的经验。

We can do arm, thumb, mud, sumo.

我们可子，拇指摔跤，泥浆摔跤，相扑摔跤。

Opposable thumbs, cranial size, altruism and cooking all played a part, but central to the naked ape's success was its ability to dominate other species.

对生拇指、头颅大小、利他主义及烹饪都是其中原因，但人类能够成功统治地球的最主要原因是支配其他物种的能力。

You can now plug in a thumb drive.

您现可插入一个拇指动器。

He accidentally hit his thumb with the hammer.

他不小心用铁锤敲着了拇指。

The only problem was, they stood out like sore thumbs.

题于，她们实太格格不入了。

According to experts, two or three times a week is a good rule of thumb.

根据专家的说法，每周最好洗两到三次。

It has long been known that a taxi firm called AAAA has a big advantage over Zodiac cars when customers thumb through their phone directories.

人们早已知户翻阅电话簿时，名叫 AAAA 的出租汽车公司要比Zodiac出租汽车公司有很大的优越性。

A rule of thumb is a practical but approximate way of doing something.

经验法则是一种实用且相似的做事方法。

A good rule of thumb is 13 calories per pound of body weight for a sedentary person of either sex, 16 calories per pound for a moderately active person, and 18 calories per pound for a vigorously active person.

一个经验法则就是，无论男女，久坐的人每磅体重需要13卡路里的热量，中等强度 活动的人每磅体重需要16卡路里，活动强度比较大的人每磅体重需要18卡路里。

Gently hold the outer edge with your thumb.

用大拇指轻轻地抓住外侧。

He took her hand and dabbed at her thumb with the cotton.

他拉过她的手，用药棉轻轻蘸了蘸大拇指受伤的地方。

Give us a thumbs up if you did.

如果你确实喜欢，请给我们点赞。

He had his thumb out and held a gas can in his other hand.

他一只手打出拇指向外的手势，另一只手里拿着一个汽油罐。

Hands and two feet, thumbs and nipples.

两只手 两只脚，两个拇指 两个奶头。

It also watches for what's called 'close-by hands', where both hands are close together near the top of the wheel, so the driver can type with both thumbs and drive at the same time.

它还可观察所谓的" 靠近的手" ，当双手都离车轮顶部很近的时候，司机可同时驾驶并用拇指打字。

So are you fast at writing the messages with your thumb?

那你发短信时打字快吗？

I always say that I have hypermobility, and then I'll just show them my thumbs or dislocate my shoulder blade.

我常说我有关节过度活动综合征，然后我给别人看我的大拇指，或者将我的肩胛骨错位。