The child started to sob when he couldn't find his mother.孩子因找不到他妈妈哭了起来.A sob caught in his throat.他泣不成声。She nodded with a sob.她啜泣着点了点头.She began to sob again, burying her face in the pillow...她把脸埋在枕头里，又开始抽噎起来。He of...
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...