The problem is inefficiency; even Dr Wang's world-leading capsules can only produce 1.6 litres of water per kilogram of lithium chloride over the course of ten hours in very arid conditions.
问题在于效率低下;即使是王博士的世界领先的胶囊, 在非常干旱的条件下, 每公斤氯化锂十个小时也只能生产出1.6升水。