knock-down-and-out碰: touch; bump倒: reverse障碍: hinder; obstruct; rub; bar; ...即: approach; reach; be near被: quilt下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:碰倒障碍即被淘汰的超越障碍比赛，即可在微信中查询翻译
