Indanone
[化] 二氢茚酮
🗣️ 情景例句
But I promise you, Alexandra,
但是我向你保证，Alexandra，
Take a rain check
遇雨改期
Speculations about is nature have been going on for literally thousands of years,
人们对睡眠作用的种种猜测，确实有数千年之久。