音标：['grei.wæk] ；

n. 杂砂岩

n. A conglomerate or grit rock, consisting of rounded
pebbles sand firmly united together.

graywacke的用法和样例：

词汇搭配

low-rank graywacke低级杂砂岩
feldspathic graywacke长石杂砂岩,长石玄武...
high-rank graywacke长石杂砂岩,高级杂砂...

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发表于:2018-12-01 / 阅读(103) / 评论(0)

美国习惯用语

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歌词如下： Oh,the old gray mare, She ain't what she used to be, Ain't what she used to be, Ain't what she used to be, The old gray mare, She ain't what she used to be, Many long years ago. Many long years ago. Many long years ago. The old gray m

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英语儿歌274首

SCIENCE IN THE NEWS - Gray Wolf in Eastern U.S. May Come Off

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科技之光

Schalke signs goalkeer Timo Hildebrand

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英语新闻

Bernanke Argues for Stronger Economic Stimulus

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英语新闻

Colorful Shades of Gray

Colorful Shades of Gray Just because something is ugly outside doesnt mean its not beautiful inside. Do you know why moths are brown? Moths are the most beautiful animals in the animal kingdom. At one time they were more colorful than the butterflies

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实用英语

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a cock-and-bull story

between-row variation

bowfins