1. So them flew through a flaw in the flue. 就那样，牠们就飞越了烟道里的一条裂纹。
2. A flea fly flew up in a flue. Said the flea, "Let us fly! " Said the fly, "Let us flee! " So they flew through a flaw in the flue. 一只跳蚤和一只苍蝇飞进烟道里。跳蚤说：「让我们飞吧！」苍蝇说：「让我们逃跑吧！」就这样，他们就飞越了烟道里的一条裂纹。
3. A flea and a fly flew up in a flue. Said the flea, "Let us fly! " Said the fly, "Let us flee! " So they flew through a flaw in the flue. 一只跳蚤和一只苍蝇飞进烟道里。跳蚤说：「让我们飞吧！」苍蝇说：「让我们逃跑吧！」就这样，他们就飞越了烟道里的一条裂纹。
英英解释
n.
1. flat bladelike projection on the arm of an anchor
2. organ pipe whose tone is produced by air passing across the sharp edge of a fissure or lip
3. a conduit to carry off smoke
