Fll
[计]= Final Lower Limit,下部终极限
🗣️ 情景例句
This has been a hard course for me.
这门课对于我来说很难。
No, no!
不要！不要！
They then knew that they had discovered the cause of the fire.
这时调查人员知道他们找到了发生火灾的原因了。