Pmf
abbr. probable maximum flood(ing) 可能最大血崩，可能性最大洪水
🗣️ 情景例句
Your duties include checking the post and distributing it.
你的职责是检查和发送邮件。
She was so stunned, that she couldn't speak.
她惊愕得说不出话来。
They also have the disadvantage of being an expensive form of transport.
飞机另一个缺点是昂贵。