Fluorescer
荧光剂; 荧光增白剂
🗣️ 情景例句
and you care about us,
而且关心我们大家，
He told me to take these pills every four hours.
他告诉了我每4小时吃一次这些药片。
Excuse me.Where's the nearest post office, please?
请问。最近的邮局在哪里？