马克非常直率而严肃地说：“你是个懦夫。”"You're a coward," Mark said very plainly and soberly.她的直率让他窃笑。He chuckled at her forthrightness.我喜欢北方人的豪爽和直率。I like the openness and directness of northerners....
远洋软泥的来源是什么?What is the origin of pelagic oozes?由牡蛎礁构成的小岛上覆盖着一层薄薄的黑色软泥.The islands consist of oyster reefs covered with a thin veneer of black mud.高能量环境不利于有机物在软泥中的保存.High energy environment are not conducive to the retent...