break down [分解，发生故障]
【构成】break[打破]；down[向下]
【例句】The car broke down on the highway.
汽车在高速公路上抛锚了。

calm down [冷静下来]
【构成】calm[冷静的]；down[向下]
【例句】Please try to calm down and explain your side of the story.
请尽量冷静下来，解释你的观点。

come down [下来，降低]
【构成】come[来]；down[向下]
【例句】The price of gasoline has come down in recent weeks.
近几周汽油价格下降了。

cut down [削减，砍倒]
【构成】cut[切割]；down[向下]
【例句】We need to cut down on our spending to save money.
我们需要削减开支以省钱。

fall down [倒下，失败]
【构成】fall[落下]；down[向下]
【例句】He fell down and hurt his knee.
他摔倒了，伤到了膝盖。

get down [下来，写下]
【构成】get[得到]；down[向下]
【例句】Please get down your name and address on this form.
请在这张表格上写下你的名字和地址。

go down [下去，下降]
【构成】go[去]；down[向下]
【例句】The temperature went down after the rain.
雨后气温下降了。

hand down [把…传下去]
【构成】hand[手]；down[向下]
【例句】This tradition has been handed down through generations.
这个传统已经代代相传。

knock down [撞倒，降低价格]
【构成】knock[敲击]；down[向下]
【例句】The accident knocked down the fence.
事故撞倒了篱笆。

let down [使失望，放下]
【构成】let[让]；down[向下]
【例句】I’m sorry I let you down.
对不起，我让你失望了。

put down [放下，写下]
【构成】put[放]；down[向下]
【例句】Please put down your phone during dinner.
吃饭时请放下手机。

run down [跑下，减少]
【构成】run[跑]；down[向下]
【例句】He ran down the stairs to catch the bus.
他跑下楼去赶公交车。

set down [放下，记下]
【构成】set[放]；down[向下]
【例句】She set down her bag and started to work.
她放下包开始工作。

shut down [关闭，停止运行]
【构成】shut[关闭]；down[向下]
【例句】The factory shut down due to lack of funding.
由于缺乏资金，工厂关闭了。

slow down [减速，慢下来]
【构成】slow[慢的]；down[向下]
【例句】You should slow down when driving through the school zone.
开车经过学校区域时你应该减速。

take down [记下，拆卸]
【构成】take[拿]；down[向下]
【例句】I took down his phone number in case I needed it later.
我记下了他的电话号码，以防我后来需要。

turn down [调低，拒绝]
【构成】turn[转动]；down[向下]
【例句】She turned down the invitation to the party.
她拒绝了参加聚会的邀请。

wear down [磨损，消耗]
【构成】wear[穿]；down[向下]
【例句】The constant friction wore down the surface of the rope.
持续的摩擦磨损了绳子的表面。

wind down [放松，结束]
【构成】wind[绕]；down[向下]
【例句】We’re winding down the project now that it’s almost complete.
现在项目快完成了，我们正在放松下来。