Desmot-ropism
[化] 穩變異構; 穩變異構現象
??? 情景例句
The times have been very bad.
時機一直很壞。
A rainbow appears.
彩虹出現了。
They were in fashion last year and the year before last.But they're not in fashion this year.
這鞋在去年和前年時興，而今年已不流行了。