serious，solemn，sober，grave，harshness ；

[例句] 要求忠诚意味着你想发展一段严肃认真的恋爱关系。 Wanting fidelity implies you're thinking about a major relationship.

[例句] 这本书的笔调有些时候太不严肃了。 The tone of the book is sometimes too flip.

solemn silence，solemn and silent，hush，hush up，[电影]Hush；

[例句] 送葬的队伍缓缓地穿过肃静的街道. The funeral made its way slowly through the silent streets.

[例句] 这间旧房子非常肃静. The old house was quite silent.

eliminate，clean up，mop up，root out，housecleaning ；

[例句] 陆军各师肃清了残余的抵抗据点。 The infantry divisions mopped up remaining centres of resistance.

[例句] 他们向警方发出了最后通牒，要求肃清整个地区的种族主义暴徒，否则他们将自行采取行动。 They issued an ultimatum to the police to rid an area of racist attackers, or they will take the law into their own hands.

serious，adjust，clean up ；

[例句] 这样蒸出的馍光洁白亮, 高大整肃, 故名 “ 高庄 ”. This steamed steamed out bright and clean white, tall purge , named " high - Johnston. "

[例句] 整肃的招贴装点着马赫迪军控制下的萨达尔城的下水道被堵塞的街道. Signs of the purge dot the sewer - filled streets of Sadr City , which the Mahdi Army controls.

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[例句] 书里的戏谑成分使严肃部分受到损害. The burlesque element weakens the serious portions of the book.

[例句] 西莉娅那种轻松活泼的少女,有时也会使严肃古板历经沧桑的男子着迷. Celia had those light young feminine tastes which grave and weather - worn gentlemen sometimes preferred a wife.

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[例句] 我爱红枫,它飘摇于肃杀的秋气之中. I love red maples , swaying in the sough autumn wind.

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