1. I challenged him to a game of chess. 我向他挑战,要跟他下一盘棋。
2. I view it as a great challenge. 我认为这是一个极大的挑战。
3. China faces the challenge. 中国正面临挑战。
英英解释
n.
1. a demanding or stimulating situation
2. a call to engage in a contest or fight
3. questioning a statement and demanding an explanation
4. a formal objection to the selection of a particular person as a juror
5. a demand by a sentry for a password or identification v.
1. take exception to
2. issue a challenge to
3. ask for identification
4. raise a formal objection in a court of law