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A: I am developing a new drug to help prolong life. B: I know a drug already, it is called exercise! prolong vt.延长，拉长，拖延 A: You have a very promising career ahead of you. B: And I have you to thank for starting me off. promising a.有希望的，有前途的 A: You have a bad cold again. B: Yes, I have been terribly prone to illness this winter. prone a.1.易于 的，很可能 的 2.俯卧的 A: The window will not stay open. B: Here, prop it up with this stick. prop vt.支撑 n.1.支柱，支撑物 2.支持者，后盾，靠山 prop up 支持，资助 A: How was the government propaganda disseminated? B: Through the newspapers and the TV. propaganda n.宣传 A: Did you grow all of these plants from seed? B: Yes, I propagated them indoors. propagate vt.1.繁殖，增殖 2.传播，宣传，使普及 vi.繁殖，增殖 | 
