The affair is wrapped in mystery.

Without any sign, his legs suddenly failed, causing him to tumble down heavily.

他的双腿毫无征兆地瘫软，使他重重跌倒在地。

Weary, I heaved a heavy sigh.

我疲惫不堪地重重叹息了一声。

Despite the challenges, he can barely manage to hold out for another couple of weeks.

尽管面临重重困难，他勉强只能再坚持两周左右。

The force flung him upward violently, then he plummeted and landed roughly twenty feet away.

这股力量猛烈地将他向上抛起，随后他坠落并在大约二十英尺外重重着地。

She stumbled backward and landed heavily on the bench as he shoved her aside.

她被他猛推一把，踉跄着后退重重跌坐在长椅上。

There are many security guards in that building.

那栋楼里有很多保安.

The security guards took the trouble-makers away.

保安把那几个打斗闹事的人带走了.

They got in disguised as a security guards.

他们装扮成保安人员混了进去.

Two Israeli security guards were wounded in the attack as well.

在袭击中,两个以色列的安全警卫也受了伤.

We have brought in security guards to protect the hotel against theft.

为防止盗窃事件,我们饭店配备了保安人员.

We have bring in security guards to protect the store against theft.

我们请来了保安人员保护商店免遭盗窃.

Eventually, security guards subdued him and led him away in handcuffs.

最终他被警卫制服,扣上手铐,带离(法庭).

I took two sleeping tablets and went out like a right.

我吃了两片安眠药,很快就入睡了.

Taking sleeping tablets regularly is never a good solution for this type of wakefulness.

经常服用安眠药绝不是解决这种失眠的好办法。

We substituted red balls for blue to see if the babies would notice.

我们用红球替代蓝球,观察婴儿是都注意他们的区别.

It is very dangerous to place a basketball on the bicycle without securing It'string bag.

蓝球没用网袋装住放在单车上是非常危险的.

Will you made a trade of your blue ball for my green one?

你愿意拿你的蓝球换我的绿球 吗 ?

They are not playing basketball.

他们没在打蓝球.

Every one of us, except him, went to watch the basketball match.

除他以外, 我们都去观看了蓝球比赛.

Almost all the teams in our school joined in the basketball tournament.

我校几乎所有的队都参加了这次蓝球锦标赛.