unnecessary 核心詞議：
adj. 不必要的；多余的，無用的
unnecessary 基本解釋
速記方法
速記技巧
詞根詞綴法
un-否定+ne-否定+-cess-行走，退讓→離開+-ary形容詞詞尾→可以離開的
知識擴展
同根詞匯
unnecessarily 不必要地；多余地
重要短語
unnecessary expenses 不必要的開支
中文詞源
中文詞源：
unnecessary
精選例句
1、 It’s more likely that none of us start a conversation because it’s awkward and challenging, or we think it’s annoying and unnecessary.
更有可能的是，我們沒有人開始交談，因為這很尷尬，很有挑戰性，或者我們認為這很煩人，沒有必要。[機器自動翻譯，如有錯誤，感謝糾錯]
2、 I hate unnecessary waste.
我憎恨不必要的浪費。
1、 ''These extra features are deemed unnecessary by the majority of shoppers, which probably reflects how these types of products are typically more expensive than regular toilet paper, even when on special offer.
“大多數購物者認為這些額外的功能是不必要的，這可能反映了這類產品通常比普通衛生紙更貴，即使是在特價時。”
1、 But overall, we suspect that a lot of unnecessary or even dangerous tests and[P] The House bill would authorize the secretary of health and human services to negotiate drug prices in Medicare and Medicaid.
但總的來說，我們懷疑有很多不必要的甚至危險的測試，眾議院的法案將授權衛生和公共服務部長就醫療保險和醫療補助計劃的藥品價格進行談判。
1、 Further arrangements – and there may be many – between the NHS and DeepMind will be carefully scrutinised to ensure that all necessary permissions have been asked of patients and all unnecessary data has been cleaned.
NHS和DeepMind之間的進一步安排——可能會有很多——將被仔細審查，以確保所有必要的許可都得到了患者的許可，所有不必要的數據都被清理了。
常見考點例句：
- Being afraid of high cholesterol is totally unnecessary .
- 害怕的高膽固醇是完全不必要的。
- Conventional war with china is , and will likely remain , unnecessary and unlikely .
- 與中國的傳統戰爭是，也將是很可能是維持的，不必要的和不太可能的。
- No point in creating totally unnecessary conflicts .
- 沒必要制造完全不需要的沖突。
- The company says unions are unnecessary for its employees .
- 公司聲稱工會對于它的雇員來說是多余的。
- In a floating exchange-rate regime reserve accumulations should also be unnecessary .
- 在浮動匯率機制下，儲備的累積也應是多余的。