Because the capsule remains within the Earth's atmosphere, no special clothing or training are needed.
由于太空舱仍在地球大气层内，因此不需要特别的服装或训练。
Only minimal training is required and no external power, electricity, equipment, clean water, or sterile environment is needed.
它只需简单培训，又无需外部能量、电、设备、干净的水或无菌环境。
The overall cost of entry — taking into account the cost of training needed only a decade ago and now no longer necessary — has not so much dropped as evaporated.
考虑到十年前你还需要花费受训费而现在那已经不需要了，网络的入场费就像被蒸发掉一样，所剩无几。
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