例句：

　　She is trying to slim.

　　她正在設(shè)法減肥。

　　Losing weight is a slow, gradual process.

　　減肥是一個(gè)緩慢而漸進(jìn)的過程。

　　Losing weight was a terrible struggle.

　　減肥是一件非常艱難的事。