短语词组短语hole sloughing 井塌phagedena sloughing 翻译sloughing WESTBANK 掉化anti sloughing 防塌sloughing formation 易坍塌地层sloughing shales 膨胀性页岩sloughing scrotum 脱囊shale sloughing 页岩坍塌sloughing mechanism 坍塌机理slough off 丢弃；抛弃 返回 sloughing