大学英语：重要词汇overwhelm vt. 淹没，压垮，压倒

如：The hospital has been overwhelmed by too many patients. 病人太多导致医院崩溃。

Any difficulty can't overwhelm us. 任何困难不可能压垮我们。

2.haggle v. &n. 讨价还价

如：They haggled over the price of flowers. 他们为花的价格讨价还价。

3.donate v. 捐赠，捐献

如：We all donated much money to Hope Project. 我们为希望工程款了不少款。

donation n. 捐献，捐赠的钱或物

charity donation 慈善捐款

4.miser n. 守财奴

5.poly-前缀，意为多，常见词汇有：

(1)polygon n. 多边形

(2)polynomial n. 多项式

(3)polygamy n. 一夫多妻