1.accident:
① 事故(n.) I saw an accident when I walked in the street.
2. appear:
① 出现 (vi) A ship appeared on the horizon. (disappear消失)
3. apply:
① 申请(for)(vi) Mr.Wang decided to apply for the job.
② 运用、应用 (to)(vt.) Our teacher applies this teaching method to his class.