粗心大意 Carelessness
Explanation
粗心大意就是做事马虎，不细心，不谨慎，容易犯错误。
Carelessness means being sloppy, inattentive, and imprudent in doing things, which easily leads to errors.
Origin Story
从前，有一个名叫王二的小伙子，他做事总是粗心大意。一天，他到集市上买了一只鸡，准备回家炖着吃。他兴冲冲地提着鸡回家，走到半路，却发现鸡不见了！王二四处寻找，却怎么也找不见。最后，他沮丧地回到家，才发现原来鸡早就从鸡笼里跑掉了。原来是王二在关鸡笼的时候，没有把笼子锁好，所以才让鸡跑掉了。从此以后，王二吸取了教训，做事更加小心谨慎，再也没有发生过类似的事情。
Once upon a time, there was a young man named Wang Er who was always careless in his actions. One day, he went to the market to buy a chicken to cook at home. He excitedly carried the chicken home, but halfway there, he realized the chicken was gone! Wang Er searched everywhere but couldn't find it. Finally, he returned home dejectedly and discovered that the chicken had already escaped from the coop. It turned out that Wang Er hadn't locked the coop properly when he put the chicken in, which allowed it to escape. From that day on, Wang Er learned his lesson and became more careful in his actions, and nothing similar ever happened again.
Usage
粗心大意一般用于形容一个人做事不认真，容易犯错误。例如：
Carelessness is generally used to describe someone who is not careful in their work and makes mistakes easily. For example:
Examples
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他做事一向粗心大意，经常犯错误。
ta zuo shi yi xiang cu xin da yi, jing chang fan cuo wu.
He is always careless in his work and makes mistakes frequently.
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因为粗心大意，他把重要的文件弄丢了。
yin wei cu xin da yi, ta ba zhong yao de wen jian nong diu le.
He lost important documents due to carelessness.
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考试时要认真细致，不要粗心大意。
kao shi shi yao ren zhen xi zi, bu yao cu xin da yi.
Be careful and thorough during the exam, don't be careless.