Permanent preparation
[医] 持久标本, 永久标本
🧩 词语组成解析
permanent
['pɝmənənt]
adj. 永久（性）的，永恒的，不变的，耐久的，持久的，经久的;稳定的;常务的，常设的;
n. 电烫发，烫发;
per贯穿，自始至终+man拿住+ent形容词后缀→永久拿住→永恒的
🗣️ 情景例句
Well, then why are you so sad?
那你为什么如此难过？
I asked him to stop, but he wouldn't.
我请他停止，但是他不肯。
At that time, however, she was not only the largest ship that had ever been built, but was regarded as unsinkable,
当时，这艘轮船不仅是造船史上建造的最大的一艘船，而且也被认为是不会沉没的。