本文作者： 21ST
Guinness world records吉尼斯世界纪录Hi, I am a sloth. I spend most of my time in trees. I'm the slowest mammal (哺乳动物) in the world. 我一分钟才走两米左右。Do you know why I move so slowly? 因为这样，那些食肉动物就不容易注意到我啦。