Yes. You'll need it to access the elevators and different parts of the building.

是的，你坐电梯、去这栋楼其他地方都需要门禁卡。

These towers, or "blades," pinwheel about a triangular central shaft that holds elevators and mechanical equipment.

这些塔，或称“叶片”，围绕着一个三角形中心轴旋转，中心轴承载着电梯和机械设备。

The main hoist winch and a system of elevators lift 1,250 tons of pipes and machinery through the 72 inches wide hole at the bottom of the boat.

主起吊绞车和升降机系统可通过船底72英尺宽的洞，提升1，250吨重的管道和机械。

They named the project Emerald Sea and recreated an 1878 painting by that name in front of the elevators where they worked, according to the book.

书中写道，他们将该项目命名为“翡翠海”，并将这幅1878年的画作复制了一张，挂在办公室电梯的前面。

Today, America's total number of elevators—900，000 at last count, according to Elevator World magazine are a force that's becoming more important than ever.

据《电梯世界》杂志报道，如今，美国电梯总数——最后统计数量达90万台。电梯变得越来越重要。

Yunbo: Where are the elevators?

云波：电梯在哪儿？