play sth down的用法和樣例：
例句
- We must keep down the cost of production.
我們必須降低成本。
- Cocoons mission difficulty tuned down.
降低了消滅蟲繭的任務難度。
- I am not the sort person to be put down.
我不是那種任人貶低的人。
- He's always running down his wife's cooking.
他總是貶低妻子的烹飪技術。
- The electrician took the houselights down.
電工將劇場中觀眾席上的燈光減弱了一點。
- I don't think that will cool his eagerness down.
我並不認為那會使他迫切的心情有所減弱。
- We have narrowed down the list to four candidates.
我們把範圍縮小到四位候選者身上。
- She is managing to keep down her spending.
她在設法縮小開支。
以上內容獨家創作，受著作權保護，侵權必究
