火车烟囱喷出的煤屑和煤烟,纷纷落在田间怒放的野花和毛茸茸的杂草茎节上.The engine sowed cinders and soot over the fiery flowers and the hairy knobs of weed.沿着荷塘,是一条曲折的小煤屑路.Beside the lotus pond there is a small tortuous cinder path....
He had an angular face with prominent cheekbones.他的脸棱角分明，颧骨突出。That is, the angular velocity is more than doubled.即所得的末角速度大于原来的二倍.In undisturbed inertial motion, the angular momentum is constant.在无扰动惯性运动中, 角动量是恒定的....