以轻松的说笑话的语调
Roosevelt's first words were in a light vein.
罗斯福的开场白情绪高涨。
in a light vein:以轻松的说笑话的语调
in a hurry 匆忙;立即,很快地;匆忙地 | in a light vein 以轻松的说笑话的语调 | in a low voice 低声地