"round off" 是一个多功能短语动词,核心逻辑是“让事物变得完整、圆满或简化”,具体含义需结合语境判断。以下是其主要用法、定义及例句:
"round off" 本质是及物动词短语(需接宾语),常见4类用法:
Please round off 5.678 to two decimal places.(请把5.678四舍五入到两位小数。→ 结果5.68)
The bill was rounded off to £20 to avoid small change.(账单被四舍五入到20英镑,避免找零。)
The wedding was rounded off with a fireworks display.(婚礼以烟花表演圆满结束。)
She rounded off her speech with a quote from Martin Luther King Jr.(她用马丁·路德·金的名言给演讲收尾。)
He rounded off his stamp collection with a rare 19th-century British penny red.(他用一枚罕见的19世纪英国红便士邮票,让自己的邮票收藏完整了。)
The new sculpture rounds off the museum’s modern art exhibit.(这座新雕塑让博物馆的现代艺术展更完整了。)
The carpenter rounded off the corners of the desk to prevent kids from bumping their heads.(木匠把书桌的角磨圆,避免孩子碰头。)
1、 被动语态常用:当强调“被圆满结束/处理”时,用被动结构(be rounded off):
The concert was rounded off by a duet from the two lead singers.(音乐会以两位主唱的二重唱收尾。)
2、 易混淆短语区分:
round up:围捕(如round up the dogs);向上取整(如round up 3.1 to 4)。
round down:向下取整(如round down 3.9 to 3)。
"round off" 的核心是“让事物闭环/完美”——无论是数字的简化、事件的收尾,还是物品的补足,都围绕“完整度”展开。记住不同语境下的搭配(如接数字、事件、物品),就能灵活使用啦!