English Dictionary

on-off

adj

That is either fully on or fully off, and is used to toggle a status between on and off; as in an on-off switch / That fluctuates between a positive and negative status, as an on-off relationship

The light switch is either on or off.

意味（1）

That is either fully on or fully off, and is used to toggle a status between on and off; as in an on-off switch

John loved being with his sister, but from time to time he wished she had an on-off switch.

意味（2）

That fluctuates between a positive and negative status, as an on-off relationship