challange

US

UK

A1 初級
n.名詞挑戰
he accepted the challenge
n.名詞挑戰
a challenge to the legality of the banning order
n.名詞挑戰
recently vaccinated calves should be protected from challenge
v.動詞挑戰
it is possible to challenge the report's assumptions
v.動詞挑戰
he challenged one of my men to a duel
v.動詞挑戰
The animals were not challenged with antigen after sensitization as the aim was to study the biochemical changes due to sensitization alone.