But hauling tons of equipment to the moon to make fuel and build a life supportsystem for a moon base, wouldn't that be too expensive?
但是把成吨的设备运到月球去制造燃料，并为月球基地建造一个生命维持系统，那不是太贵了吗？
2
"Children may face serious difficulties in coping with significant moves, especially if it removes them from their current school or supportsystem," he said.
他说：“儿童在应对重大搬迁时可能面临严重的困难，特别是如果搬迁使他们离开了目前的学校或支持系统。”
3
In studying ethnic minority families, the researchers would likely discover that the extended family is more frequently a supportsystem in ethnic minority families than in White American families.