to mix up
to fail to recognize a person or thing properly by assuming that they are another person or thing
混淆
[动词]
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登录apology
something that a person says or writes that shows they regret what they did to someone
道歉
[名词]
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登录to worry
to feel upset and nervous because we think about bad things that might happen to us or our problems
担心
[动词]
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登录appointment
a planned meeting with someone, typically at a particular time and place, for a particular purpose
约会
[名词]
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