石头脾气
乌龟的英语tortoise，说法有两种：英 [ˈtɔːtəs]，美 [ˈtɔːrtəs]。
例句：
1、A tortoise has a shell on his back.
乌龟背上有硬壳。
2、The tortoise spends the winter months in hibernation.
乌龟在冬眠中度过寒冬季节。
3、The tortoise pulled its head into his carapace.
乌龟把头缩进它的壳里。
4、Professor Binns paused again, pursing his lips, looking like a wrinkled old tortoise.
宾斯教授又停顿了一下，噘起嘴唇，活像一只皱巴巴的老乌龟。
5、The elephant dwarfed the tortoise.
那只乌龟跟那头象相比就显得很小。
