Allotropy
n. 同素异形(现象)
🗣️ 情景例句
Great idea!
好主意！
The first step to virtue is to abstrain from vice.
不作恶是走向美德的第一步。
An even harder situation is to be on the platform in good time for a train and still to see it go off without you.
更难堪的情况是虽然及时赶到站台上，却眼睁睁地看着那趟火车启动，把你抛下。