keep up

phrasal verb

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keep up

if particular weather keeps up, it continues without stopping（天气）持续不变
- The rain kept up all afternoon.雨下了整整一个下午。

keep up (with somebody/something)

to move, make progress or increase at the same rate as somebody/something（与…）齐步前进，并驾齐驱；跟上
- Slow down—I can't keep up!慢点，我跟不上了！
- I can't keep up with all the changes.我并非所有的变化都能跟得上。
- Wages are not keeping up with inflation.工资赶不上通货膨胀。

keep somebody up

to prevent somebody from going to bed使某人熬夜（或开夜车、不睡觉）
- I hope we're not keeping you up.希望我们没有耽误你睡觉。

keep something up

to make something stay at a high level使某事物保持在高水平
- The high cost of raw materials is keeping prices up.昂贵的原料费用使价格居高不下。
to continue something at the same, usually high, level使某事物保持（在同一水平，通常指高水平）
- The enemy kept up the bombardment day and night.敌人昼夜轰炸不停。
- We're having difficulty keeping up our mortgage payments.我们难以继续偿还按揭贷款。
- Well done! Keep up the good work/Keep it up!干得好！继续好好干吧！
to make something remain at a high level使处于高水平；使不低落
- They sang songs to keep their spirits up.他们唱歌以保持高昂的情绪。
to continue to use or practise something沿用（或沿袭、保持）某事物
- to keep up old traditions保持老传统
- Do you still keep up your Spanish?你还坚持说西班牙语吗？
to take care of a house, garden, etc. so that it stays in good condition保养，维护（房屋、花园等） synonym maintain related noun upkeep