aid可不可数
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aid可不可数
![aid可不可数](/uploads/image/z/19616934-30-4.jpg?t=aid%E5%8F%AF%E4%B8%8D%E5%8F%AF%E6%95%B0)
都有.不可数时强调‘帮助’这个事情的本身,可数时跟侧重‘帮助’作为一种资源.
例如:可数时
exercise is an important aid to recovery after heart attacks
不可数时
she walked with the aid of a nurse
例如:可数时
exercise is an important aid to recovery after heart attacks
不可数时
she walked with the aid of a nurse