Water quality is ensured by careful attention to rainwater harvesting technology.
雨水收集技术保证其水质。
There's just one snag—harvesting the oil from algae-filled water is prohibitively expensive.
但是，这种获取燃料的方式还存在一个障碍：从充斥着藻类的水中收集油料的成本是极其昂贵的。
There's just one snag—harvesting the oil from algae-filled water is prohibitively expensive.
但是，这种获取燃料的方式还存在一个障碍：从充斥着藻类的水中收集油料的成本是极其昂贵的。
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