1. no access to 没有获得···的途径，无法接触

超过 25 亿人无法使用安全的卫生设备。

2. propose a solution 提出一个解决方案/方法

例句：We asked brilliant engineers to help us solve this problem, and one of those engineers actually proposed a solution where the waste is valuable.
我们邀请杰出的工程师们来协助我们解决这个问题，而其中一位工程师真的提出一个排泄物也有价值的解决办法。

3. separate... from 从···中分离

例句：And in the boiling process, we separate the water vapor from the solids.
煮沸过程中，我们将水蒸汽从污泥块分离。

4. get paid 获得报酬

例句：The entrepreneur that owns this processor will get paid for the input—the sludge, and that same entrepreneur will get paid for the outputs—the electricity, the water, and the ash.
拥有这台处理器的企业家会拿到投入物(污泥)的报酬，且那同一位企业家还会拿到产出物(电力、水，以及灰烬)的报酬。