及物动词
3. All mammals breathe air.
哺乳类动物全都呼吸空气。
不及物动词
1. breathe
1. When we breathe, we draw air into our lungs.
当我们吸气时，把空气吸入肺里。
2. The animal was still breathing, so we knew it was still alive.
那头动物仍在呼吸，所以我们知道它还活着。
3. The doctor told him to breathe in deeply and then breathe out.
医生叫他先深深吸一口气，然后再把气吐出来。