unit 582 买止咳药

dialogue 
英语情景对话

A:How do I take the syrup?
A:请问这种糖浆该怎么服用？

B:One teaspoonful, 3 times a day. Shake it well before taking it.
B:每天三次，每次一茶勺。嚼前摇匀。

A:How do I take the pain-killers?
A:那么镇痛剂呢？

B:Take I tablet of this pain-killer if you feel pain, but not more than once every four hours.
B:疼的时候就用一片，不过每两次必须间隔4小时以上。

A:Well, thanks a lot.
A:好的，非常感谢。

B:Not at all.
B:不客气。