※ 引述《her7913 (mmm不懸疑了哈哈)》之銘言：
: Someday 總有一天: some day 某日（未來）
https://www.collinsdictionary.com/dictionary/english/someday
Someday means at a date in the future that is unknown or that has not yet
been decided.
https://www.collinsdictionary.com/dictionary/english/some-day
Some day (also someday) means at a date in the future that is unknown or
that has not yet been decided.