elevator ,escalator区别
elevator ,escalator区别
elevator和escalator有什么区别?
Does this store have an elevator?an escalator
MOVING WALKWAY与ESCALATOR的区别
elevator和lift的区别?
elevator 和stairwell的区别
escalate, lift, elevator的区别
elevator,lift有什么区别?谢谢
escalator用浊划吗?
escalator是什么意思
elevator与lift有区别吗?请举例说明.
elevater ,lift ,escalator区别,要详细(例如:什么时候用哪个.)