A rorqual, especially Balaenoptera physalus of the Atlantic and Pacific coasts, that attains a length of about21 meters(70 feet).是什么意思_A rorqual, especially Balaenoptera physalus of the Atlantic and Pacific coasts, that attains a length of about21 meters(70 feet).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句