Sspl
[医][=saturation sound pressure level]饱和声压（级）
🗣️ 情景例句
He is a good speaker of English.
他英语说得非常流利。
There was a big crowd and we had difficulty getting a taxi.
外面有一大群人并我们有很困难招一辆出租车。
I don't know. I haven't made up my mind yet.
不知道。我还没下定决心呢。