impel

动词 impel:

1. urge or force (a person) to an action; constrain or motivate
   同义词：force
2. cause to move forward with force
   同义词：propel

1. The President's speech impelled the nation to greater efforts.
   总统的讲话激励国民更加努力。
2. Impelled by feelings of guilt, John wrote to apologize.
   约翰有感愧疚，於是写信道歉。
3. I felt impelled to investigate the matter further.
   我觉得自己有责任对事情作进一步调查。
4. I was so annoyed that I felt impelled to write a letter to the paper.
   我非常恼怒，以致觉得非给报社写封信不可。

im.pel

v.tr.（及物动词）
im.pelled,im.pel.ling,im.pels
To urge to action through moral pressure; drive:
驱使，迫使：用道德的压力迫使行动；驱动：
例句：
We were impelled by circumstances to take a stand.
我们因形势所迫而采取一个立场

To drive forward; propel.
推动，推进

来源：
Middle English impellen
中古英语 impellen
from Latin impellere
源自 拉丁语 impellere
in- [against] * see in- 2
in- [反对] *参见 in-2
pellere [to drive] * see pel- 5
pellere [驱赶] *参见 pel- 5