继续做，熟悉，保持联系...

He lengthened his stride to keep up with her.他迈大步追上她。The two saleswomen were busily trying to keep up with the demand.那两名女售货员正忙着接待顾客。She was skipping to keep up with him.她连蹦带跳地走着，好跟上他的步伐。...

keep up with的音标：keep up with的英式发音音标为：[ki:p ʌp wið]keep up with的美式发音音标为：[kip ʌp wɪð]...