Doctors must first contact a drugstore to order the medicine for their patients.

VOA: special.2010.05.04

In other words, to make people obey you, you must first make them believe you.

换句话说即要让人们服从你，必需要先让他们相信你。

耶鲁公开课 - 政治哲学导论课程节选

Best way to lose weight? Well, first of all, you must be active.

减肥最好的办法？嗯，首先，你必须积极主动。

要拥有好身材 - SpeakingMax英语口语达人

The judge promised there would be one. But,he says,for that to happen, Karadzic must first appear in court.

VOA: standard.2009.10.26

It must certainly apply to matters of opinion to what we would call today First Amendment issues.

它必须能适用于关乎民意的事件,就像今天的第一修正案事件一样。

耶鲁公开课 - 政治哲学导论课程节选

Experts say for any chance of normal relations between Turkey and Armenia in the future, Ankara and Yerevan must first resolve a very painful chapter in their past.

VOA: standard.2010.03.18

So, our first orbital that an electron 1 s must be coming from is the 1 s.

所以，我们的第一个肯定有电子,被打出的轨道是。

麻省理工公开课 - 化学原理课程节选

But Wednesday,the U.S.Senate joined the House in refusing the president's request for $80 million to close Guantanamo, saying he must first come up with a concrete plan to deal with the remaining 240 detainees.

VOA: standard.2009.05.21

Of course, before doing so, he says, "you must call him first a tyrant."

当然，在叛乱或是弑君之前，你得确定你要诛杀的是一位暴君“

耶鲁公开课 - 政治哲学导论课程节选

At sixty degrees below zero, a man with wet feet must not fail in his first attempt to build a fire.

VOA: special.2010.05.01

This was my first glance at plum pudding, and I guess you can see that this must be that positive part -- most of the plums are within that, and you can see all these little raisins or plums in here, that would be that negative charge.

我想你们可以，看到着一定是正电部分,大部分的李子,都在这里面，你们也可以看到,这些小的葡萄干或李子，这就是负电荷。

麻省理工公开课 - 化学原理课程节选

Doctors who suspect a patient has Alzheimer's must test the person for many other physical problems first.

VOA: special.2009.09.15

The answer is yes. However, you first must take the steps necessary to protect yourself and your family from the dangers of the sun.

VOA: special.2010.07.06

So doctors must use stronger, "second line" drugs when the first ones fail.

VOA: special.2009.03.25

He tells VOA tougher action must follow. "This is am important first step, but it is only a first step,"

VOA: standard.2009.12.09

He demanded that first, the Palestinians must recognize Israel as a Jewish state, something they refuse to do.

VOA: standard.2009.04.17

Urbonas says communities there must focus first on developing a proper wastewater treatment system.

VOA: standard.2010.08.04

He added that the second round must not be a repeat of the first.

VOA: standard.2009.10.20

It is a necessity. He believes that the first priority of any climate bill enacted by Congress must be to put a cap on global warming gases.

VOA: standard.2010.06.14

"So the first thing,I must admit, suffers is surgery: elective surgery.Stop."

VOA: standard.2010.06.04

To end this historic conflict, both sides must be historically bold, because if each waits stubbornly for the other to act first, this will go on and be waiting for an eternity."

VOA: standard.2010.03.11