15 - 英语听力.mp3

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15 - 英语听力.mp3

15 - 英语听力

[00:01.76]Yartsa gunbu ha...

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[00:01.76]Yartsa gunbu has been used as a traditional remedy for thousands of years
[00:07.74]Though only by the very wealthy.
[00:10.49]It's been bartered for tea and silk
[00:12.80]And is worth more than four times its weight in silver.
[00:16.60]So lucrative is this trade,that sites and information are jealously guarded.
[00:27.54]At the nearby market, yartsa gunbu are cleaned
[00:31.41]And their true nature becomes clear.
[00:35.25]The yartsa gunbu translates as "summer grass,winter worm".
[00:41.04]The winter worm is a caterpillar.
[00:45.26]It eats roots of grasses, in preparation for its transformation into a moth.
[00:56.73]But some winter worms never make it as moths.
[01:00.41]Instead,a strange growth erupts from their body
[01:03.62]Appearing above ground in summer.
[01:07.06]This is the "summer grass"
[01:09.47]A fungus called Cordyceps, whose spores have infected the caterpillar
[01:14.49]Using its body as their host.
[01:19.53]Modern scientific tests have shown that substances contained in Cordyceps
[01:24.46]lower blood pressure and make it easier to breathe.
[01:28.49]So in recent years,harvesting this natural treasure
[01:32.18]has grown into a huge and profitable business.

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15 - 英语听力.mp3

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