必须的

Some relearning is usually necessary for skills such as handling money, cooking, and housekeeping.

一些再学习常常是必须的，比如掌管金钱，烹饪和持家的技能。

Values are not approximations to prices nor a necessary step in their calculation.

价值并不是价格的近似值，也不是价格计算必须的步骤。

Bloodhounds have great stamina and can walk for hours on end, so regular exercise is a must.

Bloodhounds有很大的耐力和可以步行了几个小时就结束，所以经常运动是必须的。

That is why I will send our servicemen and women into harm's way only when it is necessary, and ensure that they have the training and equipment they need when they enter the theater of war.

这就是为什麼我要派遣我们的男女军人去危险之地只有在必要之时，并在他们进入战场时确保他们受过必要训练和获取必须的装备。

I have not tried to reproduce the effect of the original Chinese by leaving out verbs and connectives that are necessary in English.

我不会试图通过丢掉动词和连词这些英语所必须的，去复制原中国古诗中的效果。

Many separate tones and notes of music, even discords and dissonances, are required to make up the harmonious anthem.

悲音和哀调是必须的；有了它们，才可以使你的音乐动听。

A good omnidirectional microphone is a must.

一个好的全向麦克风是必须的。

"In many countries it's not necessarily doctors who are prescribing, it's nurses, paramedical staff and unqualified staff," she said.

在很多国家，没有必须的医生来行使处方权，那里只有护士，药剂师以及不合格的医务人员。

Providing temperature-controlled environments for food and other perishables are essential in today's global market.

提供用于食物和其他易腐烂的货物所必须的温控环境。

What conditions were necessary for these visitations to occur?

要使这种探访得以发生，什么样的条件是必须的？

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。