The roots go a long way down .
根扎入地下很深。
Lasers can burn holes in a steel plate 0.25 inch thick at a distance of several feet .
激光在数英尺远处能在 0.25 英寸厚的钢板上烧出孔来。
The holes are evenly spaced .
这些孔的孔距均等。
To obtain continuous rotation , as in gears , a number of equally spaced involutes would be required on each basic circle .
为了获得齿轮中那样的连续转动，在每个基圆上需要有许多等间距的渐开线。
Expansion joints may be spaced at regular intervals of up to 70 metres .
可能每隔 70 米才留出伸缩接缝的空隙。
The planets are spaced at smoothly increasing distances from the sun .
各行星彼此相隔的距离，随着它们离太阳的距离而依次增大。
It extends(for) 10km north and south .
它南北延展达 10 公里。
A lever can move a load for only short distances .
杠杆只能将载荷移动很短的距离。
Feed is the distance the point of the tool moves longitudinally along the bed with each revolution of the lathe .
走刀量是车床每转一转刀具的刀尖沿床身纵向移动的距离。
The two points are 50 meters apart .
这两点相隔 50 米。
These antennas are placed some distance apart .
这些天线隔开一定的距离。
In a three-phase alternator the voltage waves of the different phases are 120 electrical degrees apart .
在三相交流发电机中，不同相的电压波彼此相隔 120 电角度。
The nearest star is 1014km away .
最近的恒星有 1014 公里远。
Mars is 15.2 astronomical units away from the sun .
火星离太阳的距离为 15.2 天文单位。
Uranus is about 2,686,847,000 km from the sun .
天王星离太阳的距离为 2 686 847 000 公里。
Neptune is 30 times farther from the sun than is the earth .
海王星离太阳的距离为地球到太阳的距离的 30 倍。
A one-way distance to the moon or back is about 80 times as far as Columbus had to travel on his voyage from Spain to the West Indies .
去月球的单程距离或由月球返回地球的距离，约为哥伦布由西班牙航海到西印度群岛所需航行的距离的 80 倍远。
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