高山生态系统

alpine ecosystems的用法和样例：

例句

The Mauna Kea summit is a conservation district because it is a fragile and unique alpine ecosystem that serves as a major source of water for the entire island of Hawaii.茂纳凯亚峰是脆弱又独特的高山生态系统，并且是整个夏威夷岛的主要水源，因此被列为生态保区。

Decrease in Shark Population Harms Ocean 1)Ecosystems

Broadcast: Jan 16, 2003 Experts say one of the world's most feared, but misunderstood, creatures is under 2) assault by fishermen. A new study of all types of sharks finds that there are fewer of them

发表于:2018-12-08 / 阅读(77) / 评论(0)

VOA2003（上）-科技先知

VOA标准英语2012--Report: Ecosystems More Stressed Than Ever

Report: Ecosystems More Stressed Than Ever When Super Storm Sandy ravaged the U.S. East Coast and inundated New York City in late October, many wondered if such extreme weather events might be linked to climate change, the gradual warming of the plan

发表于:2018-12-08 / 阅读(167) / 评论(0)

VOA标准英语2012年(十二月)

科学美国人60秒 SSS Waste Amphetamines Alter Underwater Ecosystems

Last week, tens of thousands of gallons of sewage gushed into urban streams in Baltimore, because of leaky pipes and flooding rains. And when that happens, it's not just organic matter and microbes that get flushed into aquatic habitats. It's drug re

发表于:2018-12-24 / 阅读(81) / 评论(0)

2016年Scientific American(八)月

英语音频杂志：山

Mountains By Richard Sidaway Here's a look at three popular mountain sports and some serious environmental problems facing mountains and the people who live on them. Snowboarding Thankfully, 'the winterstick' and 'the snurfer' never caught on as name

发表于:2019-01-02 / 阅读(175) / 评论(0)

英语音频杂志

乌鲁木齐的英文介绍

Urumqi, capital of Xinjiang Uygur Autonomous Region, is located in an alluvial fan-shaped basin on the northern slope of the Tianshan Mountains. The city opens on to the Junggar Basin in the north. In the Mongolian language, Urumqi means Beautiful Me

发表于:2019-01-08 / 阅读(108) / 评论(0)

旅游英语

摇滚:On The Wing

英文歌词： Breathe and Ill carry you away into the velvet sky And well stir the stars around And watch them fall away into the Hudson Bay And plummet out of sight and sound The open summer breeze will sweep you through the hills Where I live in the

发表于:2019-01-10 / 阅读(100) / 评论(0)

英文摇滚歌曲

VOA标准英语2012--Study: Nature Creates Buffer Against Climate Change

Study: Nature Creates Buffer Against Climate Change The study focused on semi-arid ecosystems which cover 40 percent of the planet and support 40 percent of the human population. Co-author David Eldridge, with the School of Biological, Earth and Envi

发表于:2019-01-13 / 阅读(95) / 评论(0)

VOA标准英语2012年(一月)

英语听力：自然百科濒临灭绝的鼠兔

Autumn in the Rocky Mountains, a time of change. Aspens turn golden and the bull elk, in the midst of their mating season, work hard to catch the eye and ears of the ladies. Up in the highest peaks, another call rings out. It's the pint-sized prince

发表于:2019-01-22 / 阅读(111) / 评论(0)

自然百科2009年

波兰副交通部长驳回高速公路丑闻

WARSAW, June 17 (Xinhua) -- Polish Prime Minister Donald Tusk removed Tadeusz Jarmuziewicz from the position of deputy transport minister on Monday after Polish media accused the latter of holding a private meeting over a controversy-shrouded stretch

发表于:2019-02-07 / 阅读(226) / 评论(0)

英语新闻

加州语文教材 G3 V3 Ecosystems in Balance 11

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加州语文教材California Treasures G3

加州语文教材 G3 V3 Ecosystems in Balance 10

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加州语文教材California Treasures G3

加州语文教材 G3 V3 Ecosystems in Balance 09

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加州语文教材California Treasures G3

加州语文教材 G3 V3 Ecosystems in Balance 08

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加州语文教材California Treasures G3

加州语文教材 G3 V3 Ecosystems in Balance 07

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加州语文教材California Treasures G3

加州语文教材 G3 V3 Ecosystems in Balance 05

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加州语文教材California Treasures G3

加州语文教材 G3 V3 Ecosystems in Balance 04

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加州语文教材California Treasures G3

加州语文教材 G3 V3 Ecosystems in Balance 03

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加州语文教材California Treasures G3

加州语文教材 G3 V3 Ecosystems in Balance 02

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加州语文教材California Treasures G3

加州语文教材 G3 V3 Ecosystems in Balance 01

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发表于:2019-02-20 / 阅读(167) / 评论(0)

加州语文教材California Treasures G3

加州语文教材 G3 V3 Ecosystems in Balance 06

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加州语文教材California Treasures G3

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Aleurites mollucana willd.