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。

《柯林斯英汉双解大词典》

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。

youdao

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。

youdao

Several times I had to switch the hand I was holding the soda in because the waxy cup was so cold.

NEWYORKER: The Region of Unlikeness

He cited the switch from hand-pulled espresso machines to the automatic variety, which helped to speed up service but diminished the spectacle of coffee-making.

ECONOMIST: Starbucks v McDonald's

It was the cue for the Robins to move up a gear as Galea's sharp switch in direction and hand-off got them off the mark on seven minutes and handed Dobson an easy conversion.

BBC: Hull KR 25-6 Leeds