Hexides
己糖二酐(脱二水己六醇类)
🗣️ 情景例句
OK, just a second.
好了！请稍等一下。
He will be here in 30 minutes.
他在三十分钟内会到这里。
and then there are three thousand million other Milky Ways, or galaxies, in the universe.
况且在宇宙中还有30亿个天河，即银河系。