What would be the null hypothesis , the kind of conjecture that you 'd make assuming nothing further .
什么是无效假设?那种你以为没什么可深究的臆测。
So henry called a council with the pope where he claimed that catherine had boned his older ( subsequently deceased ) brother arthur before she married henry , and thus their current marriage was null and void .
But gay rights advocates say it is important to gather backers for statements , resolutions and other documents such as the one that will be presented tuesday by the united states , even when their legal effect is null .
Just ahead of a deadline for companies to submit their plans for compliance , the movement for democratic change , the former opposition party that is locked in an unhappy national unity government with mr mugabe 's lot , said that the cabinet had pronounced the regulations " null and void " .