短语词组短語hole sloughing 井塌phagedena sloughing 繙譯sloughing WESTBANK 掉化anti sloughing 防塌sloughing formation 易坍塌地層sloughing shales 膨脹性頁巖sloughing scrotum 脫囊shale sloughing 頁巖坍塌sloughing mechanism 坍塌機理slough off 丟棄；拋棄 返回 sloughing