Sspl
[医][=saturation sound pressure level]饱和声压（级）
🗣️ 情景例句
555-9470…and it's still busy.
555-9470……又忙 。
Knowledge is a treasure, but practice is the key to it.
知识是一座宝库，实践是打开宝库的钥匙。
Dressed in dark glasses and old clothes, they had taken special precautions so that no one should recognize them.
他们戴着墨镜，穿着旧衣裳，特别小心以防别人认出他们。