地球穿过某些彗星的轨迹线.The earth crosses the tracks of certain comets.箭的轨迹是一条曲线.The path of an arrow is a curve.回顾过去时能看到一条清晰的轨迹，还是只能看到一连串毫无目的、前后不连贯的工作经历？Can you look back and see a well-defined path, or simply an aimless series of...
Some juxtamedullary glomeruli have two efferent arterioles.某些近髓质肾小球具有两种出球小动脉.What other efferent pathways are involved in the vomiting response?呕吐反射中还涉及到什么别的传出通路?Transmitting nerve impulses away from the central nervous ...
The camshaft rotates in phase with the crankshaft, but at half its speed.凸轮轴和曲轴协调旋转, 但速度仅是曲轴的一半.Since 1958, an engine with a single overhead camshaft has been used.从1958年起, 便已使用带有单顶置凸轮机的发动机.In the engine, oil is supplied...
Many enjoy the mental stimulation of a challenging job.很多人喜欢富有挑战性的工作所带来的强烈的精神刺激。The playgroup provides plenty of stimulation for the children.幼儿游戏组给孩子很多启发.You don't get any intellectual stimulation in this job.你不能从这...