2. It may be quite difficult for visitors to find the exhibition pavilions they are interested in the large 5. 28-square-kilometer Expo site. 对于这些参观者来说,要在5。28平方千米大的世博园区找到自己感兴趣的展品(建筑物)恐怕很难。
3. Explanation: About 100 kilometers from the Moon's South Pole, 100 kilometer wide crater Cabeus is the target for two LCROSS mission spacecraft on course to impact the Moon tomorrow. 说明:月球的南极大约100从公里的地方,100公里宽的陨石坑是两个航天器探测器的任务目标,预测月球将来的撞击。
英英解释
n.
1. a metric unit of length equal to 1000 meters (or 0.621371 miles)