单词:cobitis sinensis
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Jennifer: When you smell them, they affect your nervous system. Billy: I thought you were supposed to put them in some kind of burner with a candle... Jennifer: You can do that, too. Both methods have a healing effect. Billy: So what's your illness..
-How does it work then? There are millions of insects out there in the air you sweeping. You target specific individuals.-That's right, so we have an individual honey bee which will be carrying this very small fine container on its back. And that's t
细菌性皮肤病 脓疱疮 impetigo 毛囊炎 folliculitis 须疮 sycosis 须部假性毛囊炎 pseudofolliculitis barbae 秃发性毛囊炎 folliculitis decalvans 疖与疖病 furuncle and furuncul
This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. In 2005 two scientists won a Nobel Prize for discovering that a bacterium called Helicobacter pylori causes most stomach ulcers. One of them even chugged a
The site was once a spring-fed pond, full of water. Mammoths were tempted in to drink. But when they tried to climb back out, the banks were steep and slippery. Just like the short-faced bear imprisoned underground, some became trapped. Scavengers wo