Correctness simply means being correct or right, without mistakes — grammatical correctness, mathematical correctness, factual correctness. There's also a very common phrase, 'political correctness' (often shortened to 'PC'), which is about choosing words and behavior carefully to avoid offending or excluding people.

Correctness simply means being correct or right, without mistakescorrectness 單純的意思就是正確、沒有錯誤—— grammatical correctness, mathematical correctness, factual correctnessgrammatical correctness文法正確、mathematical correctness數學正確、factual correctness事實正確。 There's also a very common phrase, 'political correctness' (often shortened to 'PC')還有一個非常常見的詞組『political correctness』常縮寫成『PC』， which is about choosing words and behavior carefully to avoid offending or excluding people意思是小心選擇用詞和行為，避免冒犯或排斥別人。

That phrase is used two ways in real life: some people use it approvingly, to mean thoughtful, respectful language, and others use it as a complaint, to mean people being overly careful or too easily offended. So 'political correctness' especially is a phrase you should notice the speaker's tone on.

That phrase is used two ways in real life這個詞在現實生活裡有兩種用法： some people use it approvingly, to mean thoughtful, respectful language有些人是稱讚地用，意思是體貼、尊重人的用詞； and others use it as a complaint, to mean people being overly careful or too easily offended也有人是抱怨地用，意思是說人太過小心、太容易被冒犯。 So 'political correctness' especially is a phrase you should notice the speaker's tone on所以『political correctness』這個詞特別需要留意說話者的語氣。