fall behind,keep on with,keep up with,catch up的区别
问题描述:
fall behind,keep on with,keep up with,catch up的区别
答
它们长得不一样呗
答
fall behind: 落后、退后、逾期(付款等)
keep on with: 继续(做某事)
keep up with: 跟上
catch up: 追上、吹起等