A: ... Now, that's all I want to say about world coal reserves. So let's move on to the next topic, renewable resources. There are three things we have to consider when talking about renewable resources. First, sustainability; second, marketability; lastly, the reality factor. Let's talk about each point in more detail...John, would you like to take it from here?
B: Certainly. As my colleague just mentioned, sustainability is a major concern when examining the potential output of a resource. Of course, as you can see from the content of our presentation today, with renewable resource, there is a much larger sustainability than with non-renewable resource. As was already said, it is always better to seek a renewable source of energy when possible.
…关于世界煤炭储存量我想说的就这么多了.那我们接下来进入下一个主题,可再生资源.谈到可再生资源,我们要考虑三个事情.第一是可持续性,第二是可销售性,最后是实现因素.我们来详细讨论一下每一点…约翰,你接着说一下吧?
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