leave on
1．continue wearing继续穿
I feel a bit cold so I'll leave my coat on．我觉得有点冷，所以外套就不脱了。
It's rude for a man to leave his hat on indoors．一个男子在室内仍戴着帽子是不礼貌的。
2．allow to stay in place or position 使…留在原处
Leave the cloth on．I want to lay the table for supper．台布不要取下，我要摆桌子开晚饭了。
3．not switch off 不关
The electric fire had been left on overnight．电炉整夜没有关。
Don't leave the light on when you go out？出去时，请关灯。
I want to leave the soup on all morning to thicken it．我想把这个汤煮一个上午，让汤煮稠点。