Sfb
abbr. submarine fog bell 潜水雾钟
🗣️ 情景例句
I'm too deeply involved.
我已陷得太深，难以自拔了。
Time works great changes.
时间能产生巨大的变化。
My pen dropped on the ground when I was walking in the park.
当我在公园里散步的时候，我的钢笔掉到地上了。