?滑钮
... 投影片复制机 slide duplicator 滑钮 slide knob 滑轨锁定片 slide locking tab ...
横柄拨动开关
It's the harried anticipation as the character's feet slide closer and a hand reaches for the knob.
WSJ: Word Craft: Benjamin Percy, Author of Red Moon, on the Ticking Clock
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。