Obligatio naturalis
[法] 自然债务
🧩 词语组成解析
[法] 债, 债权, 债务
[医]（拉）天然的，自然的
🗣️ 情景例句
but just right for us.
但正好够我们住。
He is a man of his word.
他是守信的人。
Who was second? Who was third?
谁是第二？谁是第三？