Foot switch board has quick lowering function when unload.

脚踏开关板具备空载快速下降功能。

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A new system allows a combine harvester, say, to send a call over to a tractor-trailer so the driver can unload the grain as and when necessary.

例如，一种新的系统允许联合收割机向牵引拖车发送呼叫，以便司机可以在必要的时候卸载谷物。

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When a plane from London arrived at Sydney airport, workers began to unload a number of wooden boxes which contained clothing.

当一架来自伦敦的飞机抵达悉尼机场时，工人们开始卸下装有服装的一批木箱。

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I want to specify airlift and not airdrops. So that is when the plane actually lands and we are able to unload the food.

VOA: standard.2009.08.08

So when the plans for the move to Newark hit a political roadblock, Puck decided to unload the team at a fire-sale price.

FORBES: Ice Capades

It turns out the furniture maker would buy a whole year's supply of wood when the price was good but didn't have the space or the manpower to unload the big shipments.

FORBES: Magazine Article