They calibrate our immune systems, ward off pathogenic bacteria, even affect our weight.

它们帮助我们调整免疫系统、抵御病原菌、甚至还会影响到我们重。

Instead of being on top of the world, feeling like you've conquered everything, you're heavy with sadness or responsibility like a bunch of weight is on top of you.

你不是站在世界之巅，感觉自己征服了所有事情，而是被悲伤和责任压得很重，就像它们全都压在了你身上。

He's also a record setting weight lifter and an accomplished mountaineer.

他同时还是一位创造纪录举重运动员和老练登山运动员。

Now research suggests that the mere presence of that TV in the bedroom is linked with weight gain—regardless of how long a youngster's eyes are glued to the small screen.

现在一项研究，是卧室中有电视这个因素就已经能和重增加挂钩—不管你家孩子能着这个小屏幕看多久。

Actually, behavioral geneticists believe that less than half of the total weight variation is programmed in the genes, while height is almost entirely genetically determined.

其实，行为遗传学家认为，在重变化中，只有不到一半是由基因编程，而身高则几乎完全由基因决定。

Yeah, my friend is getting married next month and I’m supposed to be a bridesmaid. I have to fit into my dress and look nice for her wedding, but I haven’t lost any weight! Look at these love handles.

是呀，我朋友下个月结婚，我要做伴娘，我必须要能穿上礼服，在她婚礼上漂亮些。但是我根本就没减掉肥。你看这些游泳圈（腰间赘肉）！

Coins maybe have different sizes, weights, shapes and different metals.

硬币可能有不同尺寸，重量，形状和不同金属。

Good. Is there a weight training room?

好。有没有重量训练室呢？

A wet mouse has about 3 grams of water sticking to it, which is more than 10% of its body weight.

一只湿透老鼠则约有3公克水，附着在身上水重量超过其重10%。

They shifted their weights to their toes.

他们踮起脚尖。

But Karl Lagerfeld lost an incredible amount of weight after he decided, he longed to become a clotheshorse for high-fashion male brands.

当他决定成为高级定制男装" 代言人" 后，老佛爷重就减轻了许多。

As the weight of the atom increases, the frequencies of the vibrations diminish.

原子重量增加时，震动频率减小。

He was very slim, being six feet tall and weighting only 130 pounds.

他身材非常修长，他有6英尺高而只有130磅重。

Our current burdensome tax code is a massive lead weight against the American economy.

现行税法令人难以负担，就像个沉重铅块，阻碍了美国经济发展。

If you don't eat enough, you lose weight.

如果吃不饱，你重就会减轻。

Its weight was more than 700 kilos, twice that of a grizzly bear today.

它重量超过700公斤，是今天灰熊两倍。

Kreacher's thin arms trembled with the weight of the pan, still held aloft.

克利切始终高举着沉重炖锅瘦胳膊在颤抖着。

A carat is a weight measurement used only with some valuable minerals.

克拉是一种只用于测量某些贵重矿物重量计量单位。

You lose a fair bit of weight, some fat from your gut, not a problem.

你通过瘦身，减掉些赘肉 那没问题。

The result will carry great weight in determining your future.

结果将极大程度上决定你未来。