It is important to develop good study skills.

　　培養良好的學習方法很重要。

　　It is not within my power to help you.

　　我是愛莫能助啊。

　　It is not clear what they want us to do.

　　我們不肯定他們要我們做什么。

　　It is quite possible that space and time are finite.

　　很有可能空間和時間是有限的。

　　It is important not to let things get out of perspective.

　　重要的是不要把事情輕重倒置。