New words：

negative /ˈneɡətɪv/ adj. 消极的；否定的；阴性的；负的

a negative attitude 消极的态度

Don’t have a negative attitude towards your study.

a negative answer/reply 否定的答复

She gave me a negative reply when I asked her for help.

negative numbers 负数

Minus five and minus ten are both negative numbers.

a negative test result 阴性的检测结果

The COVID-19 test result was negative, so he felt relieved.

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