音标：['ɔrgən,ɪzəm] ；

n. 有机物( organism的复数形式 ); 有机体; 生物; 有机体系

n. a living thing that has (or can develop) the ability to act or function independently
n. a system considered analogous in structure or function to a living body

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This is Scientific Americans 60-Second Science, Im Steve Mirsky. Got a minute? Theres a cool new Web siteand iPhone appthat could come in handy in a wide variety of circumstances. Its called Time Tree. And it tells you how closely related any two org

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This is Scientific American's 60-Second Science, Im Steve Mirsky. Got a minute? Biologists often attempt to construct a genealogy that shows the relationships of all life on earth. One well-accepted effort compares the nucleic acid sequences that cod

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Hi, its Kasey-Dee Gardner, in this weekend Why Tell Me Why will answer an interesting viewer question. The viewer wants to know why certain species die after they reproduce. So, we're here to find out the answer. Urn, so there are a bunch of species,

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学英语单词

amplifier gain characteristic

anticlinal spring

application middleware