The new textbook is in course of preparation.

新的教科书正在准备之中。

In course of time they became completely friendly and even visited some keepers’ houses and huts.

通过一段时期的接触后，密西根狼獾变得信任人类，并且有时还来拜访自然保护区看守人的房子。

It is impossible to separate seeing and creating clearly as two different concepts. But to see, and to continue to see, in course of time, becomes creation.

不能把观看和创作截然分开为两个完全不同的概念。

Perhaps some of our readers may ask here, whether in course of time these disturbances will become so great as to throw our whole solar system into confusion?

说到这里，也许一些读者会想，这种干扰会不会变得越来越强，以至于最终使我们的太阳系乱套成为一片混沌呢？

Their strategy is expansionist and imperialist, and it is greatest in effect, of course, when there is no countervailing power.

他们的战略是扩张主义的和帝国主义的，当然，它在没有抗衡力量的时候就会达到最大效果。