一；一個；單一的

one; a single; first of several

獨自的；單獨的；無伴的

alone; solitary; without a companion

唯一的；卓越的；無與倫比的

unique; sole; pre-eminent; unparalleled

同一個；相同的；同一的

same; one and the same; identical

某一個；某個；某些；有些人

a certain; some; someone; (pl.) some people

一次；一度；曾經

once; one time; at one time