单词	blue billy
释义	blue billy noun : a petrel (Pachyptila desolata) of the southern oceans with a bluish back and white underparts Word History Etymology probably from the name Billy
随便看	keep one's eyes skinned keep one's feet on the ground keep one's finger on the pulse of keep one's fingers crossed keep one's guard up keep one's hand in keep one's hands off keep one's hands off of keep one's head keep one's head above water keep one's head down keep one's lip buttoned keep one's lips buttoned keep one's mind off keep one's mind on keep one's mouth shut keep one's nose clean keep one's nose out of keep one's nose to the grindstone keep one's options open keep one's pecker up keep one's powder dry keep one's promise keep one's side of the bargain keep one's silence

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