round up
collocation把…聚集起来；围捕
The police rounded up the suspects in a dawn raid.
警方在凌晨突袭中围捕了嫌疑人。
使成圆形；变圆
先理解核心含义，再看它在真实句子里的用法。
使成圆形；变圆
To make or become shaped into a curve or circle.
The carpenter rounded the edges of the table.
木匠把桌子的边缘磨圆了。
将某物塑造成曲线
To shape something into a curve.
变成曲线形状
To become shaped into a curve.
完成；填满；见圆满
To finish; to complete; to fill out; see also round out.
将数字(尤其是小数)四舍五入到最接近的整数或其他接近的数；见向下取整,向上取整
To approximate (a number, especially a decimal number) by the closest whole number, or some other close number, especially a whole number of hundreds, thousands, etc.; see also round down, round up.
round
Base
原形
rounds
3rd person
第三人称单数
rounding
-ing
现在分词
rounded
Past
过去式
rounded
Past participle
过去分词
She rounds the corner every morning.
她每天早上拐过那个弯。
He has rounded the numbers to two decimal places.
他已经将数字四舍五入到两位小数。
They rounded off the discussion with a summary.
他们以总结结束了讨论。
规则动词，过去式和过去分词为rounded。
The cashier rounded up the total to $10.
收银员将总额向上取整为10美元。
They rounded off the project with a celebration.
他们用庆祝活动圆满结束了项目。
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把…聚集起来；围捕
The police rounded up the suspects in a dawn raid.
警方在凌晨突袭中围捕了嫌疑人。
把（数字）向下取整
You can round down 15.7 to 15.
你可以把 15.7 向下取整为 15。
使圆满结束
We rounded off the evening with a song.
我们用一首歌圆满结束了这个夜晚。
使完善；充实
The panel rounded out the discussion with a live demo.
小组成员用现场演示充实了讨论。
突然斥责；转而攻击
The manager rounded on the intern for being late.
经理因为实习生迟到而斥责了他。
转过街角
A cyclist rounded the corner at full speed.
一名骑自行车的人全速转过街角。
聚拢；围捕；把（数字）向上凑整
The police rounded up the suspects after the robbery.
警方在抢劫案发生后围捕了嫌疑人。
使圆满结束；给（数字）四舍五入
We rounded off the meal with a cup of coffee.
我们以一杯咖啡圆满结束了这顿饭。
日夜不停；连续一整天
The nurses worked round the clock to care for the patients.
护士们日夜不停地照顾病人。
把通常的那几个嫌犯抓起来。
In the 1942 film Casablanca, police captain Renault orders his men to round up the usual suspects, meaning to gather the usual criminals.
在1942年的电影《卡萨布兰卡》中，警察队长雷诺命令他的手下把一贯的嫌犯圈起来，意思是把常见的罪犯集合起来。
Use round naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
round 中间的字母 o 像一个圆圈，动词就是把东西弄圆、绕圆，或把数字凑成整圆。
语域：mixed 常见场景：craft or pottery shaping、phonetics instruction、numerical estimation、route descriptions round 作动词时语域会随搭配变化：表示“使成圆形/变圆”或“把数字四舍五入”时通常属于中性；表示“绕过、拐过”时多用于叙述性语境，在口语化表达中也较常见。建议先掌握常见搭配，再根据具体场景选择语域。
以上各词与 round 押韵，均含 /aʊnd/。注意：不要仅凭拼写判断，-ound 也可能读其他音，例如 wound 指“伤口”时读 /wuːnd/，不押韵；只有作 wind 的过去式时才读 /waʊnd/，与 round 押韵。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.