clean up: 清理

Eg. Stop idling and help me clean up.

别游手好闲的, 来帮我打扫打扫吧.

Eg. It will take you a lot of time to clean up your room.

打扫房间，你需要花费许多时间。

Eg. The room is dirty; please help me to clean up.

房间太脏了，请帮我打扫干净。

Eg. After the Christmas dinner, we all pitched in to clean up the house.

圣诞晚餐后,我们全都动手帮助清理房子。

pretty up: 使......漂亮，使......可爱

Eg. They are prettying the house up.

他们正在装饰房子。

spy on: 暗中监视

Eg. He was sent to spy on the enemy's movements.

他被派去侦察敌人的行动。

Eg. Jack was paid by the police to spy on his colleagues.

杰克受雇于警察在暗中监视他的同事们。

Eg She accused Moses of hiring a private detective to spy on her.

她指责摩西不该雇用私人侦探盯她的梢。

Eg. They can spy on me through a window.

他们通过一扇窗户可以监视我。

at least: 至少

Eg. You should read one book a month at least.

你一个月至少应该看一本书。

Eg. She has to mop the kitchen floor at least once a day.

她至少每天擦一次厨房的地板。

Eg. The villa' ll fetch at least $ 50000.

那座别墅至少能卖五万美元。

Eg. This was at least a temporary relief from the impasse.

这至少使我暂时摆脱了僵局。