Light, sweet crude for February dropped $2.73, or 4.7 percent, to settle at $55.59 a barrel on the New York Mercantile Exchange.是什么意思_Light, sweet crude for February dropped $2.73, or 4.7 percent, to settle at $55.59 a barrel on the New York Mercantile Exchange.在线翻译_英语_读音_用法_例句