The strong usually dominate over the weak.

强者常常支配弱者。

They often got stuck in the mud.

他们常常陷到泥里。

The person always returns ingratitude for kindness.

这个家伙常常恩将仇报。

They often stood sentry on snowy nights.

他们常常在雪夜放哨。

We often denote danger by red letters.

我们常常用红字表示危险。

I’ve had a lot of late nights recently.

最近我常常睡。

We often asked the veteran workers for advice.

我们常常向老工人求教。

I'm often afraid to go out on the streets.

我常常不愿意到街上去。

The prices of meals are often artificially inflated.

菜价格常常被人为地抬高。

Things often appear chaotic to the outsider.

在外人看来事情常常片混乱。

The jocko often likes to imitate the human behavior.

黑猩猩常常喜欢模仿人类的行为。

We have to harry him for money.

我们不不常常缠着他要钱。

Recently the professor often has a memory block.

近来教授常常出现记忆不起的情况。

It is often difficult to get animals to mate in captivity.

常常难使被关的动物交配。

He was wont to say that children are lazy.

他常常说小孩子们懒惰。

Acne often clears up with a change in diet.

痤疮常常会随着饮食的改变而消失。

The onset of depression often follows a traumatic event.

抑郁症发作常常发生在遭受创伤之后。

Doctors often sense uneasiness in the people they deal with.

医生常常会觉察到病人的不安情绪。

Cruelty an injustice often make our blood boil.

残暴与不公正常常使我们怒不可遏。

A decisive person acts quickly and often succeeds.

果断的人行动迅速, 常常成功。