It is over the counter. 這是非處方藥。

例句：
A:I am absolutely certain I'm going to fail my English test.
我敢肯定。我英語考試不會及格的。
B:What makes you so sure and why are you so pessimistic?
什么讓你這么肯定？你為什么這么悲觀呢？
A:Because it is impossible to improve listening level within a week.I'm not being pessimistic.I'm being realistic.
因為我不可能在一周之內提高聽力水平。我不是悲觀，是現實。
B:This is your only reason?
這就是你的原因？
A:Yes,I know my vocabulary and reading comprehension are pretty good.But my listening hasn't changed at all in a long time.It seems so hard to improve it,and I'm not exactly sure why.
是啊，我知道我的詞匯和閱讀理解非常好。但我的聽力這么長時間都沒有一點變化。看來很難提高了。我也不知道是什么原因。
B:Don't worry about it.Practice makes perfect.I'll lend you some listening materials so that you can practice more before the exam.I believe you can pass the exam with good preparation.
別擔心，熟能生巧。我借你一些聽力材料。你可以在考試前多加練習。我相信，如果你好好準備，你會通過考試的。
A:Thank you.That's very nice of you.
謝謝，你這真是太好了。

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