Unavailability
[计] 无效性, 不可用性
🗣️ 情景例句
You remember that day, Robbie?
你还记得那天吗 Robbie
This country is famous for its beautiful lakes.
这个国家以其美丽的湖泊而闻名于世。
Do you want the large size or the small size?
您要大号的还是小号的？