As far as mathematicians are concerned, there's a certain virtue in wearing intellectual blinkers.就数学家们来说，用学者的眼光来看问题不无裨益。Noncommuting objects are as real to the mathematicians as commuting objects.对于数学家来说,不可交换的对象与可交...
She was already a keen and experienced sailor, having crewed in both Merlin and Grayling.在“默林”号和“格雷林”号上工作过以后，她已经是一名头脑敏捷、经验丰富的水手了。Fishing for grayling in Norwegian lakes has caused a similar pattern in these fish.在挪威捕河鳟也导...