A freight car with a door in the floor through which materials are unloaded.

底卸式车一种货车，底下装有可卸货的门。

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To get to the Skylark, Ms. Calegari entered a barely noticeable door on a side street, rode up 30 stories in a freight elevator and climbed two flights of narrow stairs, as if entering a speakeasy.

要前往云雀酒吧，卡勒伽利需要从旁边一条小巷中走进一个毫不起眼的入口，乘坐货运电梯上30层，再爬上两段狭窄的楼梯，就像是进入一个地下酒吧。

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As an advanced model of transportation organization, the system of highway express freight transportation has realized rapid, safety, right and "door-to-door" service.

公路快速货运系统作为一种先进的运输组织形式，能够提供快速、安全、准确和“门到门”的运输服务。

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The aircraft are already designed to be changed quickly between freight and passenger use, using a large back door.

BBC: BAE Prestwick wins ?15m RAF planes re-fit contract

It hopes that companies will be attracted to a service that offers seven-day, door-to-door delivery for half the price of air freight delivery of four to six days.

ECONOMIST: Fast container ships

The Paradigm Signature SUB 25 looked small enough in the back of the freight truck, but by the time it was at our front door, all 150-pounds of it seemed appropriately intimidating.

ENGADGET: Paradigm SUB 25 subwoofer hands-on HD