known quantity 是什么意思

	1.【数学】已知量。 2.〔口语〕名人；人们熟知的东西。

	known: adj. 大家知道的；知名的；已知的。 a nation ...
	quantity: n. 1.量 (opp. quality); 分量，数量 ...

	1.	However , it s reasonable to assume that there s less risk involved in the known quantity 然而，假设在已知数量中涉及的风险较少是合理的。
	2.	Though i may not be the most current test pilot , either operational or developmental , i am a known quantity to both communities 尽管我可能不是最前沿的试飞员，也不是最前沿的作战人员和研发人员，但我了解这两个圈子里的大量事情。
	3.	This union connects the discipline of thinking with the discipline of making , the discovery of known quantities and ideas in physical form and material properties 这种结合将思想结合创造、对已知的量和观点（以物质的形式）的探索、以及材料的特性。
	4.	You have a known quantity , your team , and you have to make them into something that can win the absolute majority of some 60 games a season , against 30 + other teams of almost equal quality 场上球员有规定的数量，而你的球队以及你自己必须做到一个赛季赢下60场比赛，比同级别的其他球队多拿30分。

known quantity是什么意思