如果可储藏的地方有限，这些拉环式背包能节省很大空间。These zip-top bags are great space-savers if storage is limited.包括地下蒸汽储藏的地热能, 也是无污染的.Geothermal energy , which involves stored underground reservoirs of steam, is also pollution - free.这种葡萄酒储藏的年...