1.
- 我一定是讓跳蚤咬了,胳膊很癢。
I must have been bitten by a flea, my arms are itchy.
- 晚安,睡個好覺,別讓跳蚤咬。
Good night, Sleep tight Don't let the fleas bite.
- 一隻跳蚤有更小的跳蚤咬它,而後者有更小的咬它們,如此以至無窮。
A flea has smaller fleas to prey on them, and these have smaller still to bite them, and so proceed ad infinitum.