Demand would fall short of supply, leaving willing workers on the shelf.

需求将少于供给，使乐于工作的工人无所事事。

youdao

Donated blood has a short shelf life, and the supply is often tight.

捐赠的血液只有很短的一段保质期，而且它的供应往往也非常紧张。

youdao

Donated blood has a short shelf life, and the supply is often tight.

捐赠的血液只有很短的一段保质期，而且它的供应往往也非常紧张。

youdao