1. Moon-dwellers will be able to fly in space at only three per cent of the cost of similar journeys by their terrestrial cousins.
    月球居民在太空遨游的费用仅是地球上朋友飞越同样路所需费用的3%。

2. Islands and continents make up the terrestrial parts of the earth.
    岛屿和洲构成地球上的陆地部分。