An aquifer is a water - bearing rock stratum such as sandstone and chalk.地下蓄水层是一些有水的岩石层,如沙岩和白垩岩.The coal is a coal resource that reserves in old stratum.石煤是贮藏在古老地层中的一种煤炭资源.A portion of bedrock or other stratum protruding...
还不清楚船舵是如何断裂的。It was not yet clear how the rudder had sheared off.就连那个士兵在比雷杰干什么都不清楚。Just what the soldier was doing in Bireij is unclear.不清楚飞机是坠毁在陆地上还是海里。It isn't clear whether the plane went down over land or sea....
...a bat sanctuary with special nesting sites...专门辟出了筑巢处的蝙蝠禁猎区I was glad to climb into the sanctuary of my bed.我很乐意爬上床躲起来.Just outside the sanctuary, water flowed into a Baptismal pool.礼拜堂外有水流入洗礼池.A friend dubbed it "The...