• n. 動力；促進；沖力

im-,進入，使，-pet,追逐，沖擊，詞源同compete,appetite.引申詞義推動，促進，刺激等。

impetus (n.)

early 15c., impetous "rapid movement, rush;" 1640s, with modern spelling, "force with which a body moves, driving force," from Latin impetus "attack, assault, onset, impulse, violence, vigor, force, passion," related to impetere "to attack," from assimilated form of in- "into, in, on, upon" (see in- (2)) + petere "aim for, rush at" (see petition (n.)).

1. This is the primary impetus behind the economic recovery.

這是促使經濟復蘇的主要動力.

來自《簡明英漢詞典》

2. The treaty gave a fresh impetus to trade.

這條約使雙方的貿易又推進了一步.

來自《簡明英漢詞典》

3. Children need an impetus to study.

兒童學習需要動力.

來自《現代漢英綜合大詞典》

4. This is an encouragement [ impetus ] to us.

這是對我們的 鞭策.

來自《現代漢英綜合大詞典》

5. Her speech gave an impetus to my ideas.

她的講話激發了我的思緒.

來自《現代英漢綜合大詞典》