1. ability n. 才能
例句:They have a great respect for his ability.
他们十分尊重他的才能。
2. invest vt. 投资;花费
例句:You want me to invest in your t-shirt business?
你们想让我投资你们的t恤生意?
3. economic adj.经济的;经济学的
例句:That's the incentive that other economic systems lack.
那也是其它经济体系所缺乏的刺激剂。
4. argument n.争论,争吵
例句:This argument was irresistible.
这个论点是无可争辩的。
5. expression n.表现,表示,表达;表情
例句:Why is your expression so strange?
你的表情怎么这么怪?
6. proposal n.提议;建议
例句:I agree to your proposal.
我赞成你的建议。