a free ride

an opportunity or advantage that someone gets without having done anything to deserve it

白白得到的东西，无本获得的利益

Just because he was the boss's son didn't mean Tim got a free ride.

就算蒂姆是老板的儿子也不意味着他就能有“免费的午餐”。

They are encouraging all workers to join the union rather than just taking a free ride on those who do join.

他们鼓励所有工人加入工会，而不是坐享其成。