In this use, singleness is great determination when you are working toward one thing: a mind that does not split.

In this use在這個用法裡 singleness singleness is great determination指的是很強的決心 when you are working toward one thing當你朝著一個目標努力時 a mind that does not split也就是一顆不會分心的心

You will almost always meet it in the set phrase singleness of purpose, and sometimes singleness of mind. On its own, without of purpose, English speakers much more often use singleness to mean “not being married,” so this “determination” sense really lives inside that one phrase.

You will almost always meet it你幾乎只會在固定片語裡遇到它 in the set phrase singleness of purpose就是singleness of purpose and sometimes singleness of mind有時候是singleness of mind On its own單獨使用的時候 without of purpose沒有加of purpose English speakers much more often use singleness to mean "not being married"英語人士更常用singleness來指「單身」 so this "determination" sense really lives inside that one phrase所以「決心」這個意思其實只活在那個固定片語裡

It sounds formal and a little old-fashioned; many people would now say focus or determination instead. Though actually, it still turns up in speeches and serious writing, because it has a high, earnest tone.

It sounds formal and a little old-fashioned它聽起來正式又有點老派 many people would now say focus or determination instead現在很多人會改說focus或determination Though actually不過其實 it still turns up in speeches and serious writing它還是會出現在演講和嚴肅的文章裡 because it has a high, earnest tone因為它帶著一種崇高、誠懇的語氣