1. After I heard the salesman's excellent pitch I broke down and bought from him.2. Never give in to sales pitches that end up costing you a lot of money.
 Give in to something; yield to something break downbreak down 是最好的用法.
1. 我聽到銷售員的口條後屈服了, 買了他推銷的東西.2. 別屈服在推銷員的甜言蜜語之下, 不然你會損失很多錢.
Here's your next assignment. This time please put effor into it.