sign off
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sign off — 動詞
1. to officially end a letter or conversation
1.動詞
釋義
簽署結束
to officially end a letter or conversation
例句
She signed off the email with 'Best regards'.
2. to stop broadcasting
2.動詞
釋義
結束廣播
to stop broadcasting
例句
The radio host signed off for the night.