IN WITNESS WHEREOF the undersigned plenipotentiaries, being duly authorized by their respective Governments, have signed the present Convention.是什么意思_IN WITNESS WHEREOF the undersigned plenipotentiaries, being duly authorized by their respective Governments, have signed the present Convention.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句