Vitamin B assists in red-blood-cell regeneration.维生素B可以促进红细胞再生。This chemical assists in construction of muscle, bone and other tissues.这种化学物质有助于建造肌肉 、 骨骼和其它组织.The congregation assists at divine service.会众参加圣礼....
凸轮轴和曲轴协调旋转, 但速度仅是曲轴的一半.The camshaft rotates in phase with the crankshaft, but at half its speed.在发动机里, 机油被供应到旋转在其支承轴内的曲轴和凸轮轴轴颈上.In the engine, oil is supplied to crankshaft and camshaft journals rotating in their support...