Unavailability
[计] 无效性, 不可用性
🗣️ 情景例句
I'll set up an appointment with the marketing people.
我会与行销部的人安排一次会谈。
Sometimes Henry peeps into his sister's diary.
亨利有时候会偷看他姐姐的日记。
Right! Hold it straight! I'll fill in the hole with earth.
好的！扶直了！我用土填坑了