I must try to start his breathing at once by using the mouth-to-mouth way.
I must try to start his breathing at once by using the mouth-to-mouth way.
我必须立即用口对口吹气的方法给他做人工呼吸。
I must try to start his breathing at once by using the mouth-to-mouth way.
我必须立即用口对口吹气的方法给他做人工呼吸。