Because it need to take care and recover after the operation.

I'm sorry for the times that I had to go.

对不起我一次又一次的必须要走.

The doctor's license was suspended due to medical negligence.

由于医疗疏忽,这名医生须要停牌.

An appropriate sense of humility is necessary, especially for small countries.

适度的谦卑是必要的.大国如是, 小国就更须要这么做.

This dirty floor wants a scrub.

这地板脏了,须要擦洗一下.

The following are especially to be avoided.

下面(几点)务须避免.

You must hand in your thesis before this Friday.

本周五之前你务须将毕业论文交给老师.

Attention must be paid to the following.

务须注意下列各项.

The bell for class was ringing and he dashed to the classroom.

上课铃声响了.他疾步如飞地向教室奔去!

His face pale with rage and his teeth clenched, he began pacing swiftly up and down.

他铁青着脸,咬紧牙齿在屋子里疾走.

Do not walk fast nearby the swimming pool to push and shove, that is very dangerous.

在游泳池旁边不要疾走推搡, 那样很危险.

He that rises late, must trot all day.

晚起床的人必须整天都要急步疾走.

He had left me and broken into a trot towards his block.

他离开我突然朝他的街区疾走过去.

She likes running every morning.

她喜欢每天早晨跑步.

I've fought for children for more than 30 years.

为了维护儿童的权益,我业已奔走了30余年.

He really strolled about, thinking, and then, the weather being cold, stepped into a hotel.

他真的去四处奔走, 一路思索着.然后, 因为天气寒冷, 走进了一家旅馆.

The horse responded well to his control.

这匹马很听从他的指挥.

We told him that our services were completely at his command.

我们告诉他我们完全听从他的指挥.

You must do what you're told.

你必须遵照命令去做.

Please excuse the offence this time; I will not do it again.

这次请原谅我触犯了你, 我以后不会再这样.

But what he did now made the crowd turn white with anger.

可眼下他的举动触犯了众怒,大家脸都气得刷白.