请不要躺在座椅上
如果是写一个告示,可以是：Please do not recline/lie on chairs.No reclining/lying on chairs,please!
如果是劝说客人,可以说：
Would you please not to recline/lie on chairs?
由于躺在座椅上一般占据多个座位,建议用复数chairs. 请不要躺在座椅上
如果是写一个告示,可以是：Please do not recline/lie on chairs.No reclining/lying on chairs,please!
如果是劝说客人,可以说：
Would you please not to recline/lie on chairs?
由于躺在座椅上一般占据多个座位,建议用复数chairs.