它绕着一根桥桩游了好几圈，然后猛地一扯，挣断了渔线。

The clever fish then swam round a pile and , with a sudden pull, broke the line.

这一次，它没有再向外游去，它围着一根桥桩游了几圈，再次挣脱了渔线。

This time it did now swim out. It swam round one of the piles under the bridge and again broke the line.