Hff
abbr. horizontal falling film 水平降落液膜
🗣️ 情景例句
Ooh, speaking of keeping busy-I have an early start tomorrow,and the baby-sitter has to get home.
哦， 说到忙于工作，我明天还得早起，而且临时保姆也该回家了。
My hobby is collecting books.
我的嗜好是收集书籍。
Something may have happened to her.
她可能发生意外了。