母亲让孩子按量服用止咳糖浆。
这种药必须准确按量配出。
无论如何,他们往往有减少废弃物的动力,因为大多数企业按量支付废弃物处理费。
They often have an incentive to reduce waste anyway, since most already pay for disposal by volume.
So, I ask you to do the problems as and when they're posted.
所以,我要求你们按时按量地完成作业
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