A teacher's job is relatively safe, even if they perform under par in the classroom.

At Christmas it was customary for the children to perform bits of poetry.

圣诞节孩子们总要唱一些圣诞颂歌。

In the teeth of the longest recession since the 1930s, the company continues to perform well.

尽管面对20世纪30年代以来持续时间最长的经济衰退，这家公司却一直经营良好。

It is an almost universal truth that the more we are promoted in a job, the less we actually exercise the skills we initially used to perform it.

这几乎是一条普遍的真理：我们在某一工作中越往上晋升，实际运用那些当初在工作中经常实践的技能的机会就越少。

They felt continual pressure to perform well.

他们不断感受到压力，促使他们好好表演。

The system is inadequate for the tasks it has to perform.

这个系统要完成它的任务还不够完善。

The actors clapped together a stage so that they could have room to perform.

演员们为了有个演戏的地方,匆匆搭了个舞台.

She is putting on powder, ready to perform on the stage.

她在搽粉, 准备登台演出.

The doctor contemplated the difficult operation he had to perform.

医生仔细地考虑他所要做的棘手的手术.

You'll never get an encore if you perform like that!

你要照这样表演下去,永远不会有观众要你加演!

That notary is authorised to perform the certain legal functions.

公证人被授权执行某些法律职能.

Officers and men perform their assigned duties conscientiously.

将士用命.

You should always perform what you promise.

你应永远履行你的诺言.

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。