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/ʌnˈteð.ər/
to release a person, animal, or thing so that he, she, or it can move or act freely
把…从绳上解下，松开
He untethered the pony and threw a blanket on him.
他解开小马的绳子，给它盖上一条毯子。
When success came, he untethered himself from his longtime literary agent.
当成功来临时，他摆脱了多年的文学经纪人。