Personalized customer service has been our hallmark for over 20 years. 貼心的顧客服務(wù)20多年來(lái)始終是我們的特色。Renewable technology development has been the hallmark for Steven Chu's tenure as the U.S. Secretary of Energy. 朱棣文在任美國(guó)能源部長(zhǎng)期間,政策核心一直是可再生能源的開(kāi)發(fā)。 好的,今天我們學(xué)習(xí)的詞是 hallmark, hallmark, hallmark...