镍铬硅铸铁

14 A Rare Fossil Record

14 A Rare Fossil Record The preservation of embryos and juveniles is a rate occurrence in the fossil record. The tiny, delicate skeletons are usually scattered by scavengers or destroyed by weathering before they can be fossilized. Ichthyosaurs had a

发表于:2018-12-07 / 阅读(197) / 评论(0)

英语范文背诵20篇

彭蒙惠英语：Spreading the World… Silbo Style

Spreading the World… Silbo Style By Susan Zimmerman Discovering an ancient whistling language on a tropical Atlantic island 1 All eyes and ears are upon teacher Isidro Mendoza when he enters the cla

发表于:2018-12-19 / 阅读(42) / 评论(0)

彭蒙惠英语

Philanthropy

NB: This is not a word for word transcript Yvonne: Hello, I'm Yvonne Archer and Alice has joined me for today's 6 Minute English. Hello, Alice! Alice: Hello, Yvonne. Yvonne: Of course, the world news is often about the financial crisis, so I thought

发表于:2019-01-07 / 阅读(66) / 评论(0)

六分钟英语

五人英语话剧剧本-The Silber Swindle

5人 Actors: Tavern Keepe:(男主角) Young Man Keeper's Wife(女主角) Young Man Old Man Summary: Once upon a time, there was a tavern. Travelers and hunters would exchange silver ingots for copper coins and eat some food there. The tavern keeper a

发表于:2019-01-08 / 阅读(116) / 评论(0)

英文剧本

Uma Gunasilan

BBC Learning English People and Places Sun Hai Nin SIG Sun Hai Nin: Well, hello everybody Im Hai Nin, Im from China and now Im in London. William:And Im William Kremer welcome to People and Places. You just heard a young Chinese Woman, Sun Hai Nin.

发表于:2019-02-03 / 阅读(136) / 评论(0)

人与地方

OMG美语：OMG!美语 Sore Throat

1) sore throat 喉咙痛 2) cough 咳嗽 3) cough drops/throat drops/lozenge 止咳糖经常咳嗽的人很痛苦啊，比如林妹妹。

发表于:2019-02-05 / 阅读(53) / 评论(0)

OMG美语

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学英语单词

active region filament

alternating axes (of symmetry)

antenna core

arcus plantaris

As a tree falls, so shall it lie.

asphalt volatile constituents