Someone had hollowed out a large block of stone.有人把一大块石头给凿空了。Her cheeks hollowed as she drew smoke into her lungs.当她把烟吸进肺里时，她的双颊瘪了下去。His face was hollowed out to the point of emaciation.他的脸瘦削到了憔悴的地步....
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...
白蚁可以算得一破坏木材最严重的害虫.White Ants are probably the most serious wood - destroying pests.草白蚁科常称为草料蚁,是一种半沙漠种.The Hodotermitidae are a semi - desert species known as forage bants.白蚁主要分布在热带地区.Termites are principally tropical in ...