We kept up a correspondence for many years.
我们保持了很多年的通信联系。
Michael kept up a brave front both to the world and in his home.
迈克尔在家外家内都保持着一副勇敢的样子。
The enemy kept up the bombardment day and night.
敌人昼夜不停地狂轰滥炸。
He kept up a running commentary on everyone who came in or went out.
他不断地对上下场的每一名队员进行解说。
The rain kept up all afternoon.
雨下了整整一个下午。
She still kept up with her classmates after graduation.
她毕业后仍然和她的同学们保持联系。
She has kept up physical training for several years without interruption.
她坚持锻炼，多年来从未间断。
他坚持作家庭作业。
Michael kept up a brave front.
迈克尔一直装出一副勇敢的样子。
The Blizzard kept up for four days.
这场暴风雪一直持续了四天。
They kept up a good head of steam .
他们把蒸气压力保持在所需的水平上。
The soldiers kept up a steady fire.
士兵们不停地射击。
You have kept up the pressure for change.
你们继续为变革施加压力。
他关心体育运动。
Kim kept up her training after the game.
比赛结束后，阿金还是继续着她的训练。
I kept up with many of my old classmates.
我和老同学保持着联系。
I had also kept up with my teaching schedule.
我还一直坚持按照教学计划讲课。
They kept up a sturdy opposition to the plan.
他们坚决反对这个计划。
He kept up his research even though he was ill.
即使病了，他也继续他的研究。
It is important that comments be kept up-to-date.
及时地更新注释也很重要。
There is a huge landscape painting kept up there.
梅峰上珍藏着一幅巨型的山水画。
The enemy kept up their bombardment day and night.
敌军日夜不停地持续轰炸。
He has kept up his study ever since the year 1980.
自从1980年以来他一直坚持学习。
Not only had they not kept up, they’d fallen behind.
他们不仅没有迎头赶上，反而是掉队了。
Not only had they not kept up, they'd fallen behind.
他们不仅没有迎头赶上，反而是掉队了。
Supplies have not kept up with this potential demand.
供应并没有跟上潜在需求的步伐。
The snow started to thaw as the temperature kept up.
随着气温升高，雪开始融化。
The snow started to thaw as the temperature kept up.
随着气温升高，雪开始融化。
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