让他们满意（幸福、开怀）
make one's day
[俚语]使满意…；给…带来幸福
例如：I'll make your day.
Your presence would make their day.
你的出现会让他们开怀一整天.
They may rebuff you,but most people will be touched and grateful – you'll get to make their day a little bit easier,which will put a dash of joy into yours.
他们可能会回绝你,但是很多人会很受感动并心存感激——你的帮助更容易让他们过得开心,也能使你的内心感到愉悦.