Fluorexone
荧光素配位剂(由不纯品calcein制得的纯品)
🗣️ 情景例句
and the company in Los Angeles
而在Los Angeles
I got a bonus.
我得到了一份红利。
the total absence of fishing boats around the oil rigs.
钻井平台周围根本没有捕鱼船只。