Retentivity
n. 保持力, 记忆力, 顽磁性\\n[化] 剩余磁化强度
🗣️ 情景例句
I don't know if I can get to sleep.
我不知道我能否睡得着。
I asked him to leave immediately, but he wouldn't.
我请他马上离开，但是他不肯。
He did not look up from his desk when I entered.
我进去的时候，他连头也没抬。