音标：[bæktiәriә'klɔ(:)rәfil] ；

n. [生化]细菌叶绿素

n a substance in photosensitive bacteria that is related to but different from chlorophyll of higher plants

词型变化：名词复数形式 : bacteriochlorophylls

SCIENCE IN THE NEWS - Reforms at NIH / Tobacco Smoke a Dange

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科技之光

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This is the VOA Special English Development Report. World No Tobacco Day is celebrated each thirty-first of May. The observance is meant to bring attention to the growing use of tobacco and its deadly effects. The World Health Assembly established th

发表于:2018-12-07 / 阅读(70) / 评论(0)

2010年VOA慢速英语(五)月

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常春藤解析英语

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2006年慢速英语（十）月

SCIENCE IN THE NEWS - International Treaty on Tobacco Contro

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科技之光

2006年VOA标准英语-Exhibition Looks at 'Mysterious Bog People

By Mike O'Sullivan Los Angeles 27 March 2006 A museum in Los Angeles is bringing to life the people who lived in northern Europe thousands of years ago. Well-preserved bodies and artifacts from fog-sh

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2006年VOA标准英语（三月）

365个英语简短小故事-259.The Mysterious Carport Stain

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365个英语简短小故事

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By Heda Bayron Hong Kong 21 December 2007 Japan has backed down from a highly controversial plan to hunt endangered humpback whales off Antarctica, after fierce criticism by Australia. The Japanese whaling fleet, however, still plans to hunt almost 1

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VOA常速英语2007年（十二月）

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2010年VOA慢速英语(六)月

VOA常速英语2008年-Exiled Zimbabweans Closely Follow Elections Bac

By Scott Bobb Johannesburg 27 March 2008 As Zimbabweans prepare to go to the polls Saturday, pre-election activity is being closely watched by an estimated 3 million Zimbabweans living in neighboring South Africa. Although they cannot vote, these exi

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VOA标准英语2008年（三月）

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Autumn Leaves Show Their True Colors As days grow shorter and nights grow cooler in Boulder, Colorado, the green leaves of summer have been putting on party colors. On cottonwood trees and aspens, theyre golden yellow coins. On Mapleton Avenue, the m

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VOA标准英语2011年(十一月)

美国国家公共电台 NPR Meet Voice Of Baceprot, The All-Girl Metal Band Making Waves In Indonesia

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AUDIE CORNISH, HOST: Need a distraction from the news? ARI SHAPIRO, HOST: We have one. CORNISH: It's a reminder of the good things in life that are free. SHAPIRO: Another commercial for Nicer Living. (SOUNDBITE OF ARCHIVED RECORDING) UNIDENTIFIED MAN

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2017年NPR美国国家公共电台2月

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Voice 1 Welcome to Spotlight. Im Liz Waid. Voice 2 And Im Adam Navis. Spotlight uses a special English method of broadcasting. It is easier for people to understand - no matter where in the world they live. Voice 1 In the last fifteen years, farmers

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环球英语 Spotlight

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The One With All The Thanksgivings 本集简介： After Thanksgiving dinner at Monica's, the gang tells stories about their worst Thanksgivings ever. In a series of flashbacks, we see Chandler learning of his parent's divorce (1978); Phoebe losing an

发表于:2019-02-04 / 阅读(109) / 评论(0)

老友记(六人行)

Romario supports Ronaldo's run for president of CBF

RIO DE JANEIRO, March 23 (Xinhua) -- Brazil soccer legend Romario declared on Friday that he has no intention of running for the president of the Brazilian Confederation of Soccer (CBF). However, the now congressman endorsed Ronaldo to command the fu

发表于:2019-02-07 / 阅读(133) / 评论(0)

英语新闻

Son of Romario signs with Brazilian club

RIO DE JANEIRO, Dec. 7 (Xinhua) -- The son of former Brazil great Romario has signed his first professional contract with Brazilian third-tier side Brasiliense. Romarinho, 19, joined the Brasilia-based outfit on Thursday, less than 24 hours after qui

发表于:2019-02-08 / 阅读(128) / 评论(0)

英语新闻

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发表于:2019-02-12 / 阅读(138) / 评论(0)

雅思英语

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Because chlorophyll is the chemical responsible for making leaves green, its absence allows chemicals such as carotinoids, xanthophylls, and others to give leaves their orange, yellow, and various other colors. As trees stop producing chlorophyll, th

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英语时差8，16

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borassus aethiopus mart.

brightly painted

californians

chamber volume