The silence lengthened as Thorne unnecessarily shuffled some papers.索恩整理着一些本无须整理的文件,沉默还在延续。They have pulled out patients' teeth unnecessarily.他们毫无必要地拔掉了病人的牙。I don't want to invade your private life unnecessaril...
The length of the war is one of the biggest unknowns.战争要持续多久是最大的未知数之一。There are many unknowns in science.科学上还有许多未知之处.It was like a single equation with two unknowns.这挺像两个未知数组成了个简单方程....