At average road speeds, that would take about 400 years.

在平均路速下，这将需要大约400年的时间。

Road speed limits are used in most countries to set the maximum speed for cars, trucks, buses, motorbikes, etc.

大多数国家都规定了公路上车辆的最高时速标准，适用于汽车、卡车、公共汽车、摩托车等。

Up and down the dusty roads sped the soldiers of the quartermaster corps, also in side-cars.

军需官部队的士兵也在尘土飞扬的道路上来回飞驰，他们也坐在边车里。

The 620's standard 16 by two full Powershift transmission lets the tractor reach road speeds up to 25 25 miles per hour.

620 的标准 16 x 2 全 Powershift 变速箱使拖拉机的行驶速度高达 25 25 英里/小时。

The Dutch government backtracked on previous pledges and reduced road speed limits to 100kph (62mph) during the day to help meet a court-ordered reduction in emissions.

荷兰政府改变了之前的承诺，即白天将车速限制降低到100公里每小时(62英里每小时)，以帮助实现法院下达的减排命令。

Yet a recent trial of the zipper merge in Winnipeg had very little effect on road speeds, perhaps because drivers weren't willing to make room for late-mergers.

然而，最近在温尼伯进行的拉链合并试验对道路速度的影响很小，这可能是因为司机不愿意为后期合并腾出空间。