An alumna is a woman who used to study at a particular school, college, or university. It is the feminine of alumnus, kept from Latin, so it feels formal and a little ceremonial — the kind of word a university uses on invitations, in official histories, or when it wants to sound proud and traditional.

An alumna女校友is a woman who used to study at是曾經在a particular school, college, or university某間學校、學院或大學讀過書的女性。It is the feminine of alumnus它是alumnus的陰性形式，kept from Latin保留自拉丁文，so it feels formal and a little ceremonial所以聽起來正式又帶點儀式感——the kind of word a university uses就是大學會用在on invitations, in official histories邀請函、官方歷史上，or when it wants to sound proud and traditional或想聽起來驕傲又傳統時的那種字。

In everyday American speech, many people just say alum and skip the gender marking.

In everyday American speech在美國日常口語裡，many people很多人just say alum就直接說alum，and skip the gender marking省略掉性別的區分。

The plural of alumna is alumnae (often said like “alumn-ee” or “alumn-eye”); people mix that up with alumni, which is the masculine or mixed plural.

The plural of alumnaalumna的複數is alumnae是alumnae，often said like "alumn-ee" or "alumn-eye"常常唸成"alumn-ee"或"alumn-eye"；people mix that up with alumni大家常常把它跟alumni搞混，which is the masculine or mixed plural那是陽性或男女混合的複數。

Chinese 校友 does not force this male/female split, so English is being fussier here than Taiwanese usually needs to be.

Chinese 校友中文的「校友」does not force this male/female split不會強迫分男女，so English is being fussier here所以英文在這裡比較龜毛，than Taiwanese usually needs to be比台灣人平常需要的還講究。