noun 下载 🔗分享 回扫 The period when the beam of the cathode-ray tube returns to its initial horizontal position in order to start the next line of the display. Examples : "During the oscilloscope's retrace, the bright line disappears briefly before beginning the next scan. " 示波器在回扫期间，亮线会短暂消失，然后开始下一次扫描。 electronics technology computing signal device machine physics 与AI对话词汇游戏阅读练习
verb 下载 🔗分享 重描, 重新描绘 To trace (a line, etc. in drawing) again. Examples : "To prepare for the art test, she retraced the outline of the flower on the paper. " 为了准备美术考试，她在纸上重描了花的轮廓。 action art way 与AI对话词汇游戏阅读练习
verb 下载 🔗分享 折回，原路返回 To go back over something, usually in an attempt of rediscovery. Examples : "He retraced his steps, and found his keys where he had dropped them." 他折回原路，结果在掉落的地方找到了钥匙。 action way history place 与AI对话词汇游戏阅读练习
