Learner's definition of GOTCHA
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used in writing to represent the sound of the phrase got you when it is spoken quickly逮住你了，明白了（用于书面语，表示短语got you说快时的发音） -
She ran after him, grabbed him by the arm, and said “Gotcha!” [=I got you; I caught you]她追过去，抓住他的手臂，并且说：“我逮住你了！”
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“We'll have to leave soon, so be ready.” “Gotcha.” [=I have got you; I understand]“我们马上要出发了，做好准备。”“知道了。”
◊ The pronunciation represented by gotcha occurs only in very informal speech. The written form should be avoided except when you are trying to represent or record such speech.*gotcha只在很不正式的口语中使用，书面语中应避免，仅用于表示或记录其发音。
2 gotcha /ˈgɑːtʃə/ noun
plural gotchas
plural gotchas
Learner's definition of GOTCHA
[count] US, informal
: an unexpected problem or usually unpleasant surprise意想不到的问题；令人不快的意外