强化免疫catch: vt. (caught; caught) 1.捕捉;逮着 ...up: adv. (superl. uppermost ) 1. ...catch up: 赶上;打断…的话; 竞争; 追钩; 追上catch up on: 补做catch up with: 赶上,保持一致; 迎头赶上下载手机词典可随时随地查词查翻译