Benzonatate
對丁氨苯甲酸甲氧聚乙烯氧基乙酯(鎮咳藥)
??? 情景例句
I have been learning English for three years now.
我學英語有3年了。
You were here in February,weren't you?
二月份你曾在這里，對不對？
Hello. Can I speak to Zhou Lan, please?
喂！請問周蘭在嗎？