diatomaceous silica的用法和样例：

例句

Diatom ooze coating is a kind of interior decoration material with main compositions of diatomaceous earth and zeolite.硅藻泥涂料是以硅藻土和沸石为主成分开发的内部装饰表材。

英语听力文摘 English Digest 563、植物的自我防御！

Plant Self-defense Plants may appear to be helpless in the face of hungry,toothy animals but many plants have evolved interesting systems of self-defense. Coarse meadow grasses are a good example. If you run your finger along a blade of coarse grass,

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英语听力文摘 English Digest

美国硅砂矿引发社区担忧

AS IT IS 2015-07-14 Silica Sand Mining Worries Communities 美国硅砂矿引发社区担忧 The United States is increasing production of oil and natural gas through a process known as fracking. This process is sometimes called hydraulic fracking be

发表于:2019-01-12 / 阅读(156) / 评论(0)

2015年VOA慢速英语(七)月

美国国家公共电台 NPR An Epidemic Is Killing Thousands Of Coal Miners. Regulators Could Have Stopped It

AILSA CHANG, HOST: Despite mounting evidence and a stream of dire warnings, federal regulators and mining companies failed to protect coal miners from toxic dust. MARY LOUISE KELLY, HOST: NPR and the PBS series Frontline spent more than a year lookin

发表于:2019-01-19 / 阅读(143) / 评论(0)

2018年NPR美国国家公共电台12月

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学英语单词

4-ethylsulfonylnaphthalene-1-sulfonamide

abdominocardiac reflex

air inlet/outlet

Aktsyabrskaya

all-state

alpine combined event

Amazonian antshrikes

angle of pitch

apothecaries' measure

apsps

arbitrary selection