Hopefully it is not too late for us to wake up to make our earth more healthy and beautiful.
VOA: special.2010.04.23
OK. Now. This is just sort of bringing us back up to speed and adding a few more details in.
好,现在,我们刚刚回头,过去看了一些,细节问题。
We're still close enough to the summer that the air is not just filling us up with extra static electricity, so it's a little more challenging here.
我们现在离夏天更近了,这样空气中不总是,充满额外的静电,所以这时做实验,会有一些挑战性。
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