Levogyre
氯霉素
??? 情景例句
About the quality of 500 cartons of tin food we ordered last time.
是關于我們上次定購的500箱罐頭食品的質量問題。
I'm listen to the music downstairs.
我在樓下聽音樂。
That's OK.We really need the material.
沒關系，我們急著要這些原料。