到时这句谚语用单数还是复数?No pain no gain .或者No pains no gains.

到时这句谚语用单数还是复数?No pain no gain .或者No pains no gains. no pain no gain 还是no pains no gains 是no pains,no gains还是no pain,no gain? 是no pains,no gains?还是no pain,no gain? 是no pain no gain还是no pains no gains? no pain,no gain还是no pains,no gains?还是两个都可以? no pain no gain 和 no pains no gains是不是都没错． 英语翻译有S 没得?是"no pains no gains"还是"no gain no gain" No pains,no gains no pains,no gains! no pains no GAINS No pain No gain