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- Castles in the air cost a vast deal to keep up. 空中楼阁，要有一大笔费用来维持。
- She likes to keep up with the latest fashions. 她喜欢穿戴入时。
- A pianist has to practice every day to keep up to scratch. 钢琴手要天天练习才能保持高水平。
- My parents do their best to keep up the family tradition. 我的父母为了保持家庭的传统竭尽全力。
- The factory is in great demand of steel to keep up production. 那个工厂需要大量钢铁以维持生产。
- The house is becoming too expensive for them to keep up. 他们的房子维修费用贵得越来越修不起了。
- I want to keep up my subscription to that magazine. 我将继续订阅那本杂志。
- To fail to keep up a pace; lag behind. 落后跟不上步伐；落后
- Grandfather was to poor to keep up his house. 祖父太穷，不能维修他的房子。
- Have a glass of brandy to keep up your spirits. 喝杯白兰地提提神吧。
- I was put to it to keep up with his pace. 我跟上他是不容易的。
- I need a belt to keep up my trousers. 我需要一条腰带系裤子。
- Catherine wishes to keep up your acquaintance. 凯瑟琳愿意继续和你来往。
- He used to keep up late into the night. 他过去常常熬到深夜。
- The house is strong enough to keep up in a storm. 这座房子很坚固，足以抵挡风暴。
- They tried to keep up the reputation of their firm. 他们试图维护他们公司的信誉。
- At home he didn't have to keep up appearances. 在家里他用不着装面子。
- He drove off too fast for me to keep up. 他的车开得太快了；我赶不上。
- My parents did their best to keep up the family tradition. 我的父母为了保持家庭的传统竭尽全力。
- He made an arduous effort to keep up with the rest of the class. 他努力跟上班上其他同学。
