He says the tuberculosis epidemic is far from over and is being aggravated by multi-drug resistant TB and its even more dangerous form, extensively drug-resistant TB.

VOA: standard.2009.12.09

John, I'm concerned that you seem so aggravated.

ohn,我很担心，你变得越来越有攻击性了。

I need 课堂 - SpeakingMax英语口语达人