But by firing its three ion engines one at a time over 620 days — accumulating another 60 miles per each day — Dawn has reached its current astronomical speed and has no plans of slowing down.
但是在620天的时间里开动了三个引擎之一——再积累每天60英里——曙光号就已达当前的天文速度，而且没有减速的计划。
Its performance targets are extraordinary: zero to 60 miles per hour in 5.6 seconds, 120 mile-per-hour top speed, and a battery-powered range of 160 miles at minimum for the base model.
该车的性能目标着实可圈可点：零到60英里加速时间为5.6秒，最高时速为120英里，基本款车型充电一次至少可以行驶160英里。
Its performance targets are extraordinary: zero to 60 miles per hour in 5.6 seconds, 120 mile-per-hour top speed, and a battery-powered range of 160 miles at minimum for the base model.
该车的性能目标着实可圈可点：零到60英里加速时间为5.6秒，最高时速为120英里，基本款车型充电一次至少可以行驶160英里。
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