易混淆的单词： Fours

A baby crawls on all fours .

婴儿四肢着地爬行。

Dogs are used to racing on all fours .

狗狗天生就是用四条腿跑的。

He jumped around on all fours like a pantomime bear and was perfectly ridiculous .

他像儿童剧里的熊一样爬在地上跳来跳去，样子十分滑稽可笑。

He fell on all fours .

他跌得趴在地上。

In keeping with its reputation , the cat usually does land on all fours , and scientists have come to understand how .

为了保持其名誉，猫通常都是四脚着地在地上爬行，科学家已经明白了猫们这样做的目的。