短語詞組短語water bath trough 浴缸water seal trough 水封槽water sealing trough 水封槽deep water marine trough 深水海槽passive water -trough 被動式水槽water discharge trough 洗砂排水槽water distribution trough 配水槽water collecting trough 集水槽sand -water mixing trough 水砂郃混溝 返回 water trough