You can describe a loud, unpleasant mixture of sounds as a cacophony.
All around was bubbling a cacophony of voices.
Matt Haig的新书 The Midnight Library 也出现了这个表达：
When you clock off at work, you leave work or put a special card into a device to show what time you left.
①The Night Duty Officer was ready to clock off.
②They clocked off duty and left at ten to three.
《卫报》一篇题为 The joy of small things 的文章也出现了这个表达：
当然啦，下班的表达是“clock off”,那么上班就是“clock in/on ”【When workers clock on at a factory or office, they put a special card into a device to show what time they arrived.】
They arrived to clock on and found the factory gates locked.
同时，关于“clock”，我们之前也在词汇积累 | 'amputate', 还真有点可怕....出过一个短语：clock in at (光盘、电影等)时长为/数量为……【If something such as a CD or film clocks in at a particular amount of time, it is that amount of time long.】
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《新闻周刊》一篇题为 Biden's student loan forgiveness will make things worse 也出现了这个表达：