Gb	Eng
我不是说她真在外层空间--这只是打个比方.	I didn't really mean she was in outer space it's just a figure of speech.
咱们打个比方吧, 有个某某先生来旅馆登记.	Let's suppose a Mr So-and-so registers at the hotel.
这里不过是打一个比方。	Here we speak only by way of analogy.