Lactone isomerism
[化] 內酯異構現象
?? 詞語組成解析
n. [化] 內酯
n. 異性\\n[化] 異構; 異構現象
??? 情景例句
Yes. Those are excellent gifts. Who else do you need to buy for?
當然，這是都是最佳禮物。你還需要買給誰？
Give me a ring at my office.
打電話到我辦公室。
I went back to the ticket office at once.
我馬上又回到售票處。