到底是make a living还是make one's living

英语中有个短语是 make a living 。那么他的复数形式应该是make one's living 还是make one's livings?

这个和复数没关系吧。这里的living事实上应该是抽象的概念啊。所亦不论人称单复数，都应该是前一种吧。

没有earn one's life。
make a life: go to some place, find a job and establish a family. 谋生（较为富足）
make a living: work to provide oneself with things that are necessary to life. 谋生（勉强糊口度日）
make a living 相当于earn one's living。

都行啊.
make a living谋生.
make his living: 他谋生。

make a living谋生
make one's living使生存