1. The symptoms may be exacerbated by certain drugs. 这些症状可能会因为某些药物而加重。
2. Longstanding poverty has been exacerbated by racial divisions. 由来已久的贫穷因种族分裂而更加恶化了。
3. This confusion has been exacerbated by a paucity of serious attempts to synthesize and evaluate available data on the details of avian and dinosaurian evolution. 由于缺乏认真的尝试来综合和评估鸟类和恐龙进化细节的现有数据，这种混乱变得更加严重。
4. These levels come from outside activities that penetrate the classroom structure, from teaching activities, and other noise generated inside, which can be exacerbated by room reverberation. 这些（噪音）可以是穿透教室建筑结构的室外活动声、教学活动的声音以及室内产生的其它各种声响，这些声音都会因为房间的回声效果而被放大。
5. In fact, it had exacerbated his stomach ulcer. 事实上，它已经加重了他的胃溃疡。
