A polite greeting to the elevator operator, a thanks to the mail delivery person and a kind word to the assistants will be appreciated.

对电梯操作员礼貌问候，对邮递员表示感谢，对助理说句友善的话，这些都会得到赞赏。

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Hydraulic clift platform can be used to replace the cheap elevator, many companies are using hydraulic lifting platform for the delivery of goods.

液压升降平台价格便宜可代替电梯使用，目前很多企业都使用液压升降平台用于货物运送。

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How many minutes a day do Americans spend waiting--for an elevator, a web page, a customer service rep, a delivery person, a free cashier.

FORBES: Hurry Up And Wait