Coelinvar
柯艾里伐合金（一种恒弹性系数的镍、钴、铁、铬磁性材料）
🗣️ 情景例句
You can see many posters that are put up before the movie opens.
每部电影首映前你都会看到铺天盖地的海报。
It is easy to open a shop but hard to keep it always open.
开设店铺易，维持常开难。
Dust the dressing table.
掸掉梳妆台上的灰尘。