如题所述
1. "Turn on" is used to indicate the action of starting something. For example, "Turn on the TV."
2. "Turn off" is the opposite of "turn on," meaning to stop or disable something. For example, "Turn off the TV."
3. "Turn down" refers to reducing the level or volume of something. For instance, "Turn down the volume."
4. "Turn up" means to increase the level or volume of something. For example, "Turn up the volume."
2. "Turn off" is the opposite of "turn on," meaning to stop or disable something. For example, "Turn off the TV."
3. "Turn down" refers to reducing the level or volume of something. For instance, "Turn down the volume."
4. "Turn up" means to increase the level or volume of something. For example, "Turn up the volume."
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