Is that a little snake or a long worm?

那是条小蛇还是一条长虫子？

The slow-worm is in fact not a snake but a legless lizard.

蛇蜥其实不是蛇，而是无脚的蜥蜴。

The fisherman snatched up the snake and robbed him of his worm.

钓鱼的人抓住小蛇，抢了它的虫子。