Venus, Earth, and other planets also perturb Mercury's motion.金星, 地球和其他行星也使水星的运动受到摄动.Stellar passings can perturb the orbits of comets.行星的运行会使彗星的轨道发生扰动....
这是对她最尖锐的批评。This was the most biting criticism made against her.她的表演受到评论家的尖锐批评。She was crucified by the critics for her performance.她想笑，但声音听起来尖锐刺耳。She tried to laugh, and the sound was harsh and strident....