1
slow up (intransitive)
与slow down语义相近，但slow up更强调逐渐减速。
The car slowed up as it approached the traffic light.
汽车接近红绿灯时慢了下来。
放慢；减速
先理解核心含义，再看它在真实句子里的用法。
放慢；减速
become slower; lose velocity; move more slowly
The car slowed up as it approached the traffic light.
汽车接近红绿灯时慢了下来。
减速；放慢速度
lose velocity; move more slowly
变得缓慢或更慢
become slow or slower
使进展更慢
cause to proceed more slowly
slow up
Base
原形
slows up
3rd person
第三人称单数
slowing up
-ing
现在分词
slowed up
Past
过去式
slowed up
Past participle
过去分词
The truck slows up on steep hills.
卡车在陡坡上慢下来。
The accident slowed up traffic for hours.
事故使交通慢了下来好几个小时。
The computer has slowed up since last week.
这台电脑自上星期以来变慢了。
短语动词 slow up，意为（使）慢下来；变位时仅 slow 变化，up 保持不变。
The train slowed up as it approached the station.
火车进站时放慢了速度。
Could you slow up a little? I can't keep up with you.
你能稍微放慢点吗？我跟不上你。
Roadworks are slowing up traffic on the main road.
道路施工使主干道上的交通变慢了。
与slow down语义相近，但slow up更强调逐渐减速。
The car slowed up as it approached the traffic light.
汽车接近红绿灯时慢了下来。
常用于被动结构：be slowed up。
The heavy traffic slowed us up.
繁忙的交通让我们慢了下来。
Not this
Please slow up it.
Use this
Please slow it up.
使用代词作可分离短语动词的宾语时，代词必须放在动词和介词之间。
Not this
Slow up your speed.
Use this
Slow down your speed.
'slow up'与'speed'搭配不自然，表示减速时常用'slow down'。
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Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
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可及物或不及物，及物时宾语可置于短语之间或之后。
Dictionary facts from ECDICT, WIKTIONARY.