available quantity

例句：

1. 1.The company has a large inventory of available quantities.
   该公司拥有大量可用数量的商品。
2. 2. The manager needs to ensure that there is enough available quantity for the next shipment.
   经理需要确保有足够的可用数量来满足下一次的运输需求。
3. 3. The manufacturer can only produce so many units before the available quantity runs out.
   制造商在可用数量耗尽之前只能生产这么多单位。