【古生物学】屎粒化石[亦作castings]

美国科学60秒 SSS 2013-01-10

This is Scientific Americans 60 second Science, I am Gretchen Kuda Kroen, this will just take a minute. When normal populations of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as

发表于:2018-12-02 / 阅读(141) / 评论(0)

Scientific American(一)月

美国科学60秒 SSS 2013-01-14

When normal population of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as Clostridium Difficile, C Dif. The mean symptom is nearly constant and debilitating diarrhea. One of the

发表于:2018-12-02 / 阅读(311) / 评论(0)

Scientific American(一)月

VOA标准英语2011--Volunteers Keep Hands-On Science Alive i

Volunteers Keep Hands-On Science Alive in US Classrooms When it comes to making science fun, Lisa Purcell is a pro. Mimicking an owl or a foraging squirrel is all in a day's work for the director of the Four Winds Nature Institute. On this particular

发表于:2018-12-16 / 阅读(156) / 评论(0)

VOA标准英语2011年(五月)

美国科学60秒 SSS 2013-01-11

This is Scientific Americans 60 second Science, I am GretchenKuda Kroen, this will just take a minute. When normal populations of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as

发表于:2018-12-24 / 阅读(138) / 评论(0)

Scientific American(一)月

Sight Word Kids幼儿英语常见字5A Unit 2:长大

1.有趣的漫画 What will this small seed grow into? 这颗小种子长大会变成什么？ It will grow into a big tree. 它会长成一棵大树。 What will these small tadpoles into? 这些小蝌蚪长大会变成什么？ They will grow into

发表于:2018-12-31 / 阅读(176) / 评论(0)

Sight Word Kids 幼儿英语常见字5A

SSS 2010-10-13

This is Scientific Americans 60-Second Science, Im Karen Hopkin. This will just take a minute. Blackjack, slot machines, good ol Texas holdem. People love to gamble. And were not the only ones. A new study shows that pigeons will also pass up a sure

发表于:2019-01-08 / 阅读(173) / 评论(0)

Scientific American(十)月

美国国家公共电台 NPR Biologists With Drones And Peanut Butter Pellets Are On A Mission To Help Ferrets

LULU GARCIA-NAVARRO, HOST: In central Montana, drones are dropping peanut butter pellets on prairie dog colonies. As Yellowstone Public Radio's Nate Hegyi explains, it's part of an effort by biologists to save North America's most endangered mammal.

发表于:2019-01-16 / 阅读(167) / 评论(0)

2017年NPR美国国家公共电台12月

VOA常速英语2013--粪菌移植可治肠道疾病

Fecal Transplants Used to Cure Intestinal Disorders 粪菌移植可治肠道疾病粪菌移植是指将健康人粪便中的功能菌群，移植到患者胃肠道内，重建具有正常功能的肠道菌群，实现肠道及肠道外疾病的诊疗。

发表于:2019-01-31 / 阅读(132) / 评论(0)

VOA常速英语2013年(八月)

英伦广角 2011-06-13 活埋小狗被救

They found Star by chance, just in time. These animal welfare officers in Malta had been dealing with a separate case of an abandoned dog when they heard whimpering under the ground. They followed the noise, saw the tip of Star's nose and started dig

发表于:2019-02-04 / 阅读(135) / 评论(0)

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atomic self-absorption spectrophotometer

barbarianize