exercise何时可数,何时不可数?
的有关信息介绍如下:作"锻 炼"解时,不可数。作"习题,作业"解时,可数。Exercise is good for your health.I have some English exercises to work on.
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作"锻 炼"解时,不可数。作"习题,作业"解时,可数。Exercise is good for your health.I have some English exercises to work on.