Dihydroxyfluorane
[醫(yī)] 二羥基螢烷, 螢光素
??? 情景例句
How long do you intend to stay there?
你打算在那停留多久？
Do you have a room available?
你們有空房間嗎？
A week? As long as that?
一星期？要那么長(zhǎng)時(shí)間？