for 释义：
prep.为,为了；因为；给；对于；至于；适合于
conj.因为
for是介词或连接词 一般是介词 翻译为：,为了；因为；给；对于；至于；适合于
例句：
The new drug has great significance for the treatment of the disease.
这种新药对于这种病的治疗有重大的`意义。
For years we had little knowledge of what life was like inside China.
以往很多年我们对于中国国内的生活情况所知甚少。
It was a time of peak demand for the product.
那是对该产品需求最旺的时期。
There was much discussion about the reasons for the failure.
就失败的原因进行了大量的讨论。
We have a full order book for the coming year.
我们来年的订货簿已经记满了。