You can't imagine that rats eat 40 to 50 times their weight.为什么是 their weight
问题描述：
You can't imagine that rats eat 40 to 50 times their weight.为什么是 their weight
答
你不能想象猫吃比自己的体重多四十倍的食物.
是它们自己的体重,所以用their weight