I.challenge [美 ˈtʃæləndʒ, 英 ˈtʃalɪn(d)ʒ] 动词 trans
1.2. challenge (offer competition to):
1.3. challenge (question):
2. challenge (stimulate):
3.1. challenge (stop) 军事:
II.challenge [美 ˈtʃæləndʒ, 英 ˈtʃalɪn(d)ʒ] 名词
1.2. challenge C (competition):
- rival m