_____________________"And it's really only once you're out here looking at the wild plants -- which are where our crops came from -- that you get to see what they can do." And that's the VOA Learning English Environment and Science Report. I'm Marsha James.______________________"你在这儿看到野生植物真的只有一次--我们的庄稼便来源于此--你看到它们能用来做什么." 以上就是美国之音慢速英语环境与科学报道.我是Marsha James.
