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。