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。
The next day, I learned that the Carson show had earned good ratings nationwide and astronomical ones in Arkansas.
第二天，我了解到卡森的节目在全国获得了不错的收视率，在阿肯色州的收视率高得不得了。
A man ues a camera on a rocky crest filled with astronomical markers at the megalithic observatory of Kokino, soon after sunrise, early on June 21, 2010 — the day of the summer solstice.
2010年6月21日清晨，一个人正在将摄影机架在一座遍布岩石、名为kokino的古天文台上，很快日出就出现在眼前，夏至来临了。
应用推荐