The usurper took power by force .

篡夺者武装夺取了权力。

I was swept along by the crowd.

我被人群推着向前走。

We have already advised you by cable.

我们已去电通知你方。

Helen got into acting purely by accident.

海伦进入演艺界纯属偶然。

He thinned the wine by adding water.

他往酒里加水把它稀释。

I was taken aback by his rudeness.

我对他的粗鲁无礼感到吃惊。

Forests are sometimes set ablaze by lightning.

森林有时因雷击而起火。

The island is accessible only by boat.

这座岛只能坐船去。

She amused herself by reading detective stories.

她消遣。

We can annoy the enemy by raids.

我们可以用空袭骚扰敌人。

We can curb juvenile delinquency by education.

我们可以通过教育来控制少年犯罪。

He would never bemean himself by bickering.

他绝不争吵，以免自贬身价。

Crops were laid flat by heavy rainstorms.

作物被暴风雨击倒了。

He is my elder by two years.

他比我大两岁。

He is my elder by five years.

他比我大五岁。

Learn wisdom by the folly of others.

从别人的愚蠢行动中学到智慧。

We benefit greatly by this frank talk.

借由这次坦率的谈话使我们受益匪浅。

He was forced into crime by circumstances.

他为环境所迫而犯罪。

The scheme was fully operative by 1975.

到1975年这一计划已完全实施。

He was sent to hospital by ambulance.

救护车将他送往医院。