一张有效期一个月的洗衣店优惠券(或者任何其它能减轻母亲烦恼的事)，如果家里已经有小孩，那就雇佣保姆吧。

A coupon to do the laundry (or whatever other chore your mom hates) for a month. If you have small children in the family, offer to babysit.

youdao

我留下了洗衣粉盒子上的优惠券，这样我下次买时可以便宜些。

I've kept the special coupon from the box of washing powder, so that I can get my next box cheaper.

youdao

我留下了洗衣粉盒子上的优惠券，这样我下次买时可以便宜些。

I've kept the special coupon from the box of washing powder, so that I can get my next box cheaper.

youdao