in passing

副词 in passing:

1. incidentally; in the course of doing something else
   同义词：en passant

1. That girl's a bag of nerves. I just gave the back of her hair a flick in passing and she was out for her chair like a scalded cat.
   那个姑娘十分紧张，我从她身边经过时，只是在她背后的头发上轻轻碰一下，她就惊吓得从椅子上跳了下来。
2. There is little merit in passing the examination if you cheated.
   如果你作弊，考试及格也没什么价值。
3. He mentioned in passing that he had a new car.
   他顺便提到他有一辆新汽车。