open letter
US /ˌoʊ.pən ˈlet̬.ɚ/
UK /ˌoʊ.pən ˈlet̬.ɚ/
1.
公開信
a letter of protest or appeal addressed to a particular person or group but intended for general publication
:
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The activists published an open letter to the government.
活動家們向政府發表了一封公開信。
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Her open letter about climate change went viral.
她關於氣候變化的公開信走紅了。