Allotropical
a. 【化学】同素异形的
🗣️ 情景例句
When I first graduated from college.
那时我刚从大学毕业。
It is easy to open a shop but hard to keep it always open.
开设店铺易，维持常开难。
Large groups of Native Americans were forced to move away form their old hunting grounds.
成批成批的美洲土著人被迫从他们原来的狩猎场迁走。