hand switch box 手动搬道机
hand switch for electric signal 电信号手动开关
left hand switch 左向道岔
right-hand switch [铁路] 右向道岔
right hand switch machine 右侧式转辙机
Hand Switch hs 手动开关
left-hand switch [铁路] 左向道岔
right hand switch 右向道岔
He snatched up the receiver and his free hand groped for the switch on the bedside lamp.
他一把抓起听筒，空着的手则摸索着找床头灯的开关。
You can take a cue from GCC: maintain many sets of environment variables per application and switch from one pool to another depending on the work at-hand.
您可以从 GCC 得到提示：为每个应用程序维护多个环境变量集，并根据手头的工作从一个集合切换到另一个集合。
At the bottom of the stairs my hand met an electric switch. I turned it, and a great electrolier of twelve red globes flooded the cellar with a red light.
到了最下边一级台阶，我的手碰到一个电源开关，我打开它，一座安了十个红灯泡的大型吊灯架让地下室里一片红色。
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