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1·She was unable to keep up the pretence that she loved him.

她无法继续假装爱他了。《牛津词典》

2·If homeowners can't keep up the payments, they face foreclosure.

如果房主不能继续还贷，他们就面临抵押品赎回权被取消的危险。《柯林斯英汉双解大词典》

3·If you do not keep up with the payments you could lose your home.

如果你不继续付款，你的住房就可能保不住了。《牛津词典》

4·The company agreed to keep up high levels of output in order to compensate for supplies lost.

该公司同意保持高产出水平以补偿损失掉的供应品。《柯林斯英汉双解大词典》

5·In face of failure, it is the most important to keep up a good state of mind.

面对失败，最重要的是保持良好的心态。

6·In his diseased ravings he called himself the Prince of Wales, and bravely doth he keep up the character.

在他那病态的胡言乱语中，他称自己为威尔士王子，并勇敢地保持着这个称号。

7·Do you still keep up your Spanish?

你还坚持说西班牙语吗？《牛津词典》

8·Slow down—I can't keep up!

慢点—我跟不上了！《牛津词典》

9·I can't keep up with all the changes.

我并非所有的变化都能跟得上。《牛津词典》

10·It pays to keep up to date with your work.

工作能跟上时代是有利的。《牛津词典》

保持

1·The company agreed to keep up high levels of output in order to compensate for supplies lost.

该公司同意保持高产出水平以补偿损失掉的供应品。《柯林斯英汉双解大词典》

2·How many of your old school friends do you keep up with?

你与多少老同学保持着联系？《牛津词典》

3·In face of failure, it is the most important to keep up a good state of mind.

面对失败，最重要的是保持良好的心态。

4·In his diseased ravings he called himself the Prince of Wales, and bravely doth he keep up the character.

在他那病态的胡言乱语中，他称自己为威尔士王子，并勇敢地保持着这个称号。

5·As the system changes over time some level of security should keep up, and even improve if new security holes are discovered.

因为随着时间的推移系统会更改，所以，如果发现新的安全漏洞，应保持甚至提高安全级别。

继续

1·She was unable to keep up the pretence that she loved him.

她无法继续假装爱他了。《牛津词典》

2·If homeowners can't keep up the payments, they face foreclosure.

如果房主不能继续还贷，他们就面临抵押品赎回权被取消的危险。《柯林斯英汉双解大词典》

3·Keep up the struggle till you succeed.

继续战斗直到你们取得胜利。

4·While there are certain critical initiatives or projects that need to go forward if a company wants to keep up production, workers should watch out when project spending slows, Avramidis said.

阿弗拉米·迪斯说，虽然如果一家公司想继续生产，就需要推进某些关键计划或项目，但员工应该留心是否有项目支出开始减少。

5·Still, things like this only happen to losers who can’t keep up their mortgage payments, right?

不过，是不是这种事情只发生在那么无法继续支付抵押贷款的失败者身上？