建设天然气加气站成本很高，合理选择建站方式至关重要。
The investment on building up a gas station is so high that it is economically essential to choose what kind of gas station to be built.
在城市内建设CNG汽车加气站成本高，合理布局cng汽车加气站至关重要。
As the high cost of building a CNG filling station, the reasonable layout of CNG filling stations should be paid great attention.
在为国际空间站提供补给方面，像 SpaceX 这样的公司可以帮到 NASA 及其合作伙伴，因为该公司表示这样可以将发射成本降低三分之二。
Companies like SpaceX could help NASA and its partners when it comes to resupplying the ISS, as it suggests it can reduce launch costs by two-thirds.
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