大学英语六级常用短语 by occasion of
释义：
by occasion of 由于;因为
例句：
By occasion of illness of him, we can't play tennis.
因为他有病，我们不能打网球了。
大学英语六级常用短语 by occasion of
释义：
by occasion of 由于;因为
例句：
By occasion of illness of him, we can't play tennis.
因为他有病，我们不能打网球了。