availability
n. 可用性，可得性；空闲，闲暇；未婚，单身
例句
The nature and availability of material evidence was not to be discussed.
关键证据的性质和有效性将不予以讨论。
《柯林斯英汉双解大词典》
This offer is subject to availability.
优惠至此产品售完为止。
《牛津词典》
All the holidays on offer are subject to availability.
现行所有的节假日只有在情况允许时才可放假。
