They are taking steps to keep down the rabbit population.
他們采取步驟控制兔子的繁殖增長(zhǎng)。
I keep down my expenses this year.
我緊縮今年的開支。
?? 牛津釋義
keep down
not show where one is; not stand up 隱蔽; 不站立
Keep down! You mustn't let anybody see you. 蹲下! 一定不要讓人看見你. keep sb `down repress or oppress (a people, nation, etc) 壓制或鎮(zhèn)壓(人民、 國(guó)民等)
The people have been kept down for years by a brutal regime. 人民多年遭受野蠻制度壓迫. keep sth `down
(a) not raise (a part of the body) 不抬起(身體某部分)
Keep your head down! 不要抬頭!
(b) retain sth in the stomach 吞下某物; 不吐出來(lái)
The medicine was so horrid I couldn't keep it down, ie I was sick. 這藥這麼難吃, 我咽不下去.
(c) cause sth to remain at a low level; not increase sth 使某事物處?kù)兜退? 壓抑某事物
keep down wages, prices, the cost of living, etc 保持低工資、 低價(jià)格、 低生活費(fèi)等
Keep your voices down; your mother's trying to get some sleep. 小點(diǎn)聲, 你媽媽要睡覺(jué)了.
(d) not allow sth to multiply or grow 不使某物滋生或生長(zhǎng)
use chemicals to keep pests down 用化學(xué)藥品消滅害蟲.