v.驱使；激励
Impelled by feelings of guilt, John write的过去式）" target="_blank">wrote to apologize. 约翰有感愧疚，於是写信道歉。
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。
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。
n.推进者；推进器；叶轮
n.推进(强迫；冲动；抛)
v.驱使；激励
