1.keep up 保持；维持

If homeowners can't keep up the payments, they face foreclosure.
业主如果未能按时交房贷，就会面临丧失抵押品赎回权的危险。

If you don't keep up payments you could be evicted.
如果不继续交费，你会被赶出去。

2.according to 根据，按照

The route that the boatmen choose varies according to the water level.
船夫选择的路线会随水位的变化而有所不同。

He advocates streaming children, and educating them according to their needs.
他提倡把学生按能力分班，因需施教。

3.such as 例如；譬如；诸如

They offer tips on topics such as home safety.
他们就家居安全等问题提供建议。

Venerable dailies such as the Tokyo Times have shut down.
像《东京时报》之类的一些有名望的日报已经停刊了。