to decide what the intended meaning of something is

It's difficult to interpret these statistics without knowing how they were obtained. 不了解这些统计数字是怎样得来的就难以理解它们。

A jury should not interpret the silence of a defendant as a sign of guilt. 陪审团不应该将被告的沉默看作是有罪的表示。

to express your own ideas about the intended meaning of a play or a piece of music when performing it

If Shakespeare's plays are to reach a large audience they need to be interpreted in a modern style. 要使莎士比亚的戏剧让大量观众去接受，就需要用现代的风格去演绎。

to change what someone is saying into another language

We had to ask our guide to interpret for us. 我们不得不请导游为我们翻译。