2. trace n. 痕迹,踪迹
例句:Time sponges out all trace of truth.
时间会抹去一切真理的痕迹。
3. expel vt. 驱逐,赶走
例句:He could not expel from his mind the persuasion that he should see Marianne no more.
他无法从脑子里驱走这一想法:他再也见不到玛丽安了
4. exposure n. 暴露,显露
例句:Exposure to CO may enhance the development of underlying arteriosclerosis.
一氧化碳暴露可以加剧潜在动脉硬化症的发展。
5. cure n. 疗法;药;(处理社会问题等的)对策[C][(+for)]
例句:There's no known cure for a cold.
治疗感冒尚无良方。
6 .indiscriminate adj. 不加区别的,不加选择的
例句:My brother is indiscriminate in collecting stamps.
我的弟弟不加选择地乱集邮票。