When something happens rightfully, it happens the way it should — because the person has a real claim, because it is fair, or because the law says so. You reach for it when you want to say “this is not just what they fancy; they deserve it,” or “this is the proper, honest way.” A child who rightfully inherits a house is the one the will (or the law) names, not the cousin who simply moved in.

When something happens rightfully當某件事 rightfully 發生，it happens the way it should它就是照該有的樣子發生——because the person has a real claim因為當事人確實有正當的主張，because it is fair因為這樣才公平，or because the law says so或是因為法律就是這樣規定。 You reach for it when you want to say "this is not just what they fancy; they deserve it,"你想說「這不只是他們喜歡而已，是他們應得的」的時候會用這個字，or "this is the proper, honest way."或是想說「這是正當、老實的做法」。A child who rightfully inherits a house一個 rightfully 繼承房子的孩子，is the one the will (or the law) names是遺囑（或法律）指名的那個人，not the cousin who simply moved in不是那個自己搬進來住的表親。

A worker who is rightfully angry was treated badly, and the anger makes sense.

A worker who is rightfully angry一個 rightfully 生氣的員工，was treated badly是真的被虧待了，and the anger makes sense所以生氣是合理的。

Though actually, people stretch it: “She rightfully belongs on that team” can just mean “anyone with sense would put her there,” even when no court is involved.

Though actually, people stretch it不過其實大家也會把它用得更寬："She rightfully belongs on that team" can just mean "anyone with sense would put her there,"「She rightfully belongs on that team」可能只是說「有判斷力的人都會把她放進那支隊伍」，even when no court is involved根本沒有牽涉到任何法律裁決。

It is a little more formal than “fairly.” It is not the same as “rightly,” which more often means “correctly” — you rightly guessed the answer; you rightfully kept the money that was yours.

It is a little more formal than "fairly."它比「fairly」正式一點。It is not the same as "rightly,"它也跟「rightly」不一樣，which more often means "correctly"rightly 比較常指「正確地」：you rightly guessed the answer像 you rightly guessed the answer（你正確地猜中了答案），you rightfully kept the money that was yours而 you rightfully kept the money that was yours（你名正言順地留下了本來就是你的錢）。