My career seemed to be on a downward trajectory.我的事业似乎在走下坡路。It is not difficult to sketch the subsequent trajectory.很容易描绘出它们最终的轨迹.The path followed by a projectile is called its trajectory.抛物体所循的路径称为它的轨道....
这难道不是要求对生命的无常加以控制吗？Isn't this a demand to control the randomness of life?他的见解反覆无常.He is inconsistent in his views.他们不能容忍反覆无常的拥护者.They have no use for fickle supporters....