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词汇讲解：

1. injure vt.损害，毁坏
例句：You will injure your health by smoking too much.
你吸烟太多，有伤身体。

2. exchange vt. 兑换; 交换
例句：You may exchange the shoes but not return them for a refund.
你可调换这双鞋,但不能退货。

3. condolence n.慰问; 哀悼; 同情
例句：I was touched, I said something in condolence with him.
我受感动了，说了些话安慰他。

4. recovery n.恢复，复原; 重获
例句：An anonymous call led to the recovery of the stolen jewels.
一个匿名电话导致被盗珠宝失而复得。

5. determine vt.决定，确定; 判定
例句：This examination will determine your final grade. Don't blow it.
考试决定你最后的成绩,不要搞砸了。

6. refer vi.提到; 针对; 关系到
例句：Botanists refer this flower to the rose family.
植物学家将这花归入蔷薇科。

7. initiate vt. 开始，发起
例句：The surface has been heated sufficiently to initiate vertical motion.
地表加热到足以引起垂直运动。

8. predict vt. 预言，预测; 预示
例句：I predict it will outmode overnight.
我预测它会一下就过时的。