adv.任性固执地;蓄意地;
例句:
The voluntary muscle can move willfully.
随意肌可随意运动.
Willfully destroying your old radio is prohibited.
禁止故意损坏自己的旧收音机.
I understand, sir. You didn't willfully mislead the police.
我了解, 先生. 你并非有意误导警察.