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A classroom teacher who really loves literature and who has a large collection of books is in a good position to conduct bibliotherapy, if he or she possesses the other necessary personal qualifications.

一个热忠于文学，收藏有大量图书，并具有其它所有的品质的学校教师可以是阅读治疗很好的实施者。

But if the female's birth canal grew too wide, her pelvis would be so wide that she would lose the ability to run: still a necessary skill in the dangerous world of 2 million years ago.

但是，如果女性的产道长得太宽，她的骨盆会宽得让她失去奔跑能力；在200万年前的危险世界里，奔跑仍然是一个必要的技能。

Print in color when it is absolutely necessary, but if not, just use black ink.

在彩色印刷时是绝对必要的，但如果没有，就用黑色墨水。

It's necessary to spread the risks and losses even if the tortfeasors are not blameful because he has not intentionally or negligently caused the damage.

在这一背景下，现代侵权法的理念开始发生根本性的变化，即由过去的理性主义走向理性主义与人本主义的结合。

But if it becomes necessary there may be more bloodshed.

但形势如果达到需要用军队驱赶的程度的话，可能会有更多的流血冲突。

Sure, you could always boil water, but not if you don't have the necessary fuel.

当然，你总是可以烧开水，但不是，如果你不具备所需的燃料。

If you want the job done, it's sometimes necessary to call in bounty hunters.

如果你想要让这事做成，有时候必须召来赏金猎人。

Space or colon is necessary after the final modifer if you use any bracketing character for the delimiter.

如果你用括号之类的字符来做结束符，那么在最后一个修饰符之后加一个空格或者冒号是很必要的。

Bracketing by several stops is also necessary if haze or clouds interfere on eclipse day.

如果日食天受到了烟或云雾的妨碍，用几种光圈进行包围曝光也是很有必要的

If it is necessary, God gives him the Knowledge of Brahman.

如果是有必要的，神会给予他梵天的知识。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。