电热材料

疯狂英语 word_k

[00:07.60]kangaroo [00:09.82]n.袋鼠 [00:12.04]The kangaroo can carry its young in a special pocket of flesh. [00:17.28]袋鼠可以用它独有的肉口袋来装它的孩子。 [00:22.52]keep [00:24.58])保持，留住 [00:26.64]Her illness kept he

发表于:2018-11-27 / 阅读(463) / 评论(0)

疯狂英语单词王

初中英语人教版九年级08

[00:06.79]Lesson 33 1 Read and act [00:15.12]Do you think the air in Beijing is bad? [00:19.77]Yes, it's often quite dirty. [00:24.03]But don't you think it's better than it used to be? [00:28.79]Well,I can't say for sure.I've only lived here for a y

发表于:2018-12-01 / 阅读(94) / 评论(0)

初中英语人教版初三

Earth and Sky:Electric Fish 发电鱼

Electric Fish 发电鱼 One way that Harold Zakon and his team find fish to study is to put electrical detectors into the bottom of murky streams in Venezuela. This works because certain fish emit pulses of electricity. Discover electric fish -- on tod

发表于:2018-12-07 / 阅读(47) / 评论(0)

(科普英语)Earth and Sky

SSS 2011-03-29

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro

发表于:2018-12-24 / 阅读(72) / 评论(0)

Scientific American(三)月

选择一个节能的供暖系统

The more you know about the various heating systems that are available on the market today, the better able you will be to choose the best one for your home. Obviously, your main goal (besides being comfortable), is to have a heating and air conditio

发表于:2019-02-04 / 阅读(86) / 评论(0)

实用英语

【英语时差8，16】细菌能

Ya?l: Welcome to another episode of Lunch with Don and Ya?l. So, Don, what are you eating today? Don: Nothing. Y: Nothing!?! Are you on a diet or something? D: Not by choice. To be honest, I'm trying to save money by buying less food. Y: Why? D: Beca

发表于:2019-02-23 / 阅读(42) / 评论(0)

英语时差8，16

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学英语单词

Acer pseudosieboldianum

bridged metallocene catalyst

Brillouin light

bullet nose