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have a good day; take care; see you
毎朝玄関で子どもに行ってらっしゃいと言う。
Every morning I say goodbye to my child at the front door.
行ってらっしゃい、気をつけてね。
Take care, have a good day.
行ってらっしゃい、忘れ物はないですか。
Have a safe trip -- do you have everything?