turtle
n.
动龟, 甲鱼; 海龟; 海鳖
(食用)海龟肉, 甲鱼肉
(=turtle dove)[古]斑鸠
习惯用语
turn turtle 底部朝天地翻转过来; 沉没 变得无能为力 [美俚]退缩, 畏缩
tortoise
n.
(=testudo)龟; 迟钝的人[东西]
tortoise beetle
龟甲虫
习惯用语
set the tortoise to catch the hare 做不可能做到的事
The tortoise wins the race while the hare is sleeping. [谚]兔子睡觉, 乌龟跑赢