This has led to greater use of monovalent vaccines to protect against either type one or type three polio.
VOA: special.2010.01.18
So, for example, you might be familiar with Wellbutrin here, this is a type of anti-depressant that a lot of people use right now that are taking anti-depressants.
比如,你可能对这里的安非他酮很熟悉,这是一种抗抑郁症的药,很多治疗抑郁症的人都在用它。
We can use this type of a question in many situations.
我们可以在许多语境下使用这一问句。
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