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used to check that somebody agrees or understands synonym OKTopics Discussion and agreementa2(确保对方同意或理解)如何,是不是 -
used to say that you agree synonym OKTopics Opinion and argumenta2(表示同意)好,行,可以 -
used when accepting thanks for help or a favour, or when somebody says they are sorry synonym OK(回答对方的感谢或道歉)不要紧,没什么 -
used to get somebody’s attention synonym OK(引起注意)哎 - (British English, informal)
used to say hello (打招呼)你好