desirable

The ability to speak a foreign language is highly desirable .

能说一门外语是非常理想的。

a desirable neighborhood

理想的社区

It is desirable that you should have some familiarity with computers.

应该对电脑有所熟悉，这是很有益处的。

It is desirable to keep the cost as low as possible.

把成本控制得越低越好。