You should always perform what you promise.

The children always perform a nativity play every Christmas.

每年圣诞节孩子们都演耶稣诞生的戏剧.

He has taught his dog to perform some clever tricks.

他已经训练他的狗玩几样灵巧的把戏了.

I have a duty to perform.

我有一种义务要尽.

He will combine the two jobs over the next three years.

今后3年，他将同时兼顾这两项工作。

Carbon, hydrogen and oxygen combine chemically to form carbohydrates and fats.

碳、氢、氧化合形成碳水化合物和脂肪。

Combine the remaining ingredients and put them into a dish.

把剩下的配料调和好，放到一个盘子里。

Their system seems to combine the two ideals of strong government and proportional representation.

他们的体制似乎是强有力的政府和比例代表制的完美结合。

Relief workers say it's worse than ever as disease and starvation combine to kill thousands.

救灾人员说疾病加上饥饿夺去了数千人的生命，严重程度前所未有。

He was certainly not cut out to combine the jobs of editing and writing as a journalist.

他显然做不来记者这种既要编选材料又要动笔写稿的工作。

The furniture managed to combine practicality with elegance.

那些家具将实用和典雅完美结合。

Hydrogen and oxygen combine to form water.

氢与氧化合成水。

A somnambulist can happily combine sleep and exercise.

梦游者能把睡眠和运动巧妙地结合在一起.

Let us combine our firms against our competitors.

让我们把公司联合起来,对付和我们竞争的公司.

When two or more elements combine and form a compound, a chemical change takes place.

当两种或两种以上的元素结合形成化合物时，发生化学变化。

He was the man who invented the combine harvester.

他就是发明联合收割机的人.

If he can combine his ability with hard work, he should be very successful.

如果他能把自己的才能和勤奋结合起来, 必定会很有成就.

We must combine revolutionary vigour with scientific approach.

我们必须把革命精神和科学态度结合起来.

In a pot , combine onions , garlic , carrots, chicken and thyme. Season with salt and pepper.

一口大锅,扔近洋葱, 蒜头, 胡萝卜还有百里香到里面, 加海盐和胡椒进去调味.

Combine flour, yeast, sugar, salt and baking soda in a large bowl.

面粉, 酵母, 砂糖, 盐,和小苏打放到一个搅拌盆里.

As synchronous motors, they are able to combine high torques with low speeds.

作为同步电机, 他们能输出低速大转矩.