to keep something at a low level
将某物保持在低水平 (jiang mǒu wù bǎochí zài dī shuǐpíng)
"It’s tough to hold down rent costs in this city."
"在这个城市，控制租金成本非常困难。" (zài zhège chéngshì, kòngzhì zūjīn chéngběn fēicháng kùnnán)
to get some sleep
to start something that causes many unexpected problems
to impress or surprise someone greatly
to be physically fit and healthy
To amaze or impress someone greatly.
learning by experimenting and correcting mistakes
