There's no telling how long the talks could drag on.谁也说不准谈判还会拖多久。It is an open question how long that commitment can last.这一承诺能维持多久还不确定。How long he'll be able to do so is a moot point.不知道他还能这样做多久。...
Five is the square root of 25.五是二十五的平方根.The square root of 144 is 12.144的平方根是12.The positive square root of the variance is called the standard deviation.方差的正的平方根叫做标准差....