必要时

When teaching children to learn pinyin, teachers must highlight the differences in enunciating Chinese and English vowels and consonants to avoid confusion as both systems use the alphabet.

在教导儿童学习汉语拼音时，老师们有必要教导学童辨别汉语拼音和英文字母的拼音法是不同的，以免产生混淆。

"When teaching children to learn pinyin, teachers must highlight the differences in enunciating Chinese and English vowel s and consonants to avoid confusion as both systems use the alphabet."

在教导儿童学习汉语拼音时，老师们有必要教导学童辨别汉语拼音和英文字母的拼音法是不同的，以免产生混淆。

"When teaching children to learn pinyin, teachers must highlight the differences in enunciating Chinese and English vowels and consonant s to avoid confusion as both systems use the alphabet."

在教导儿童学习汉语拼音时，老师们有必要教导学童辨别汉语拼音和英文字母的拼音法是不同的，以免产生混淆。

I've fostered cats overnight when it was necessary.

我已经树立了猫通宵时，它是必要的。

If you are in possession of the quality of players necessary to make Short Passing effective, you'll quickly find that it can be quashed quite effectively on occasions by a side continually pressing and harrying your side for the ball.

如果你拥有必要的球员质量来让短传生效，你会很快发现，当对方球队为了获取控球不断地对你的球队进行逼抢时，短传可能完全失去效果。

The automobile leasing electronic commerce system according to the B/S mode application method, replace to transact on the scene of traditional mode, this since raised a business enterprise to handle affairs an efficiency, also economized the customer's precious time, also can avoid the spot transact because the personnel hustles too result in of need not bother with the trouble, get with one action and much.

汽车租赁电子商务系统基于B/S模式应用方式，取代了现场办公的传统模式，这样既提高了企业的办事效率，也节约了客户的宝贵时间，同时也可以避免现场办公时因人员过于拥挤所造成的不必要麻烦与事故，一举多得。

The holy synod said: As, in addition to all else, the excellent Nestorius has declined to obey our summons and has not received the holy and God-fearing bishops we sent to him, we have of necessity started upon an investigation of his impieties.

罗马主教说：作为，除了所有其他的优秀涅斯多留拒绝服从我们的传票，并没有得到应有的神圣和敬畏上帝主教我们送给他，我们有必要开始进行调查时，他impieties 。

In the hour of greatest peril the God of Elijah will raise up human instrumentalities to bear a message that will not be silenced.... The voice of stern rebuke will be heard.

在最危急之时，以利亚的上帝必要兴起一班人作为助手，来传扬那无法禁压的信息…必定可以听到严正责备的声音。

Moreover, while there is nothing to prevent savers and investors from dealing directly with each other if they wish, the existence of financial institutions makes direct contact unnecessary, since both groups can deal with the intermediating institutions.

另外， 当没有任何东西能够阻挡储蓄者和投资者在他们愿意的条件下直接交易时，金融机构的存在使得他们没有必要直接签署合约，因为两大集团都可以与中介机构接洽。

In order to avoid unnecessary outages, these relays should not operate during magnetizing transients or when overloads are tolerable.

为了 以避免不必要的中断，这些继电器不应在磁化瞬态或超载时，是不能容忍的。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷