The sides of the loch are almost perpendicular.湖岸几乎都是垂直的。Those that are aligned perpendicular to the plane are called axial hydrogens.与平面垂直定向的氢叫做直立氢.A perpendicular bisector of a chord passes through the centre and bisec...
The incident triggered an armed clash.这起事件触发了一场武装冲突。The only victors in a head-on clash between the president and the assembly would be the hardliners on both sides.总统和议会之间正面冲突的唯一赢家将是双方的强硬派。Don't make any policy dec...