污水二级处理

365个英语简短小故事-339. Honoring G.W. Bush

A group in San Francisco is honoring former President G.W. Bush by proposing to name a new wastewater treatment plant after him. We hope that this will catch on nationwide, said activist Bill Maher. Every state should have a wastewater treatment plan

发表于:2018-12-11 / 阅读(67) / 评论(0)

365个英语简短小故事

新GRE写作达人的arguement写作思路

arguement51The following appeared in a medical newsletter. Doctors have long suspected that secondary infections may keep some patients from healing quickly after severe muscle strain. This hypothesis has now been proved by preliminary results of a s

发表于:2018-12-12 / 阅读(26) / 评论(0)

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美国科学60秒 SSS 2012-12-17

This Scientific Americans podcast is sponsored by audible.com, the number-one online resource for best-selling audio books and more. And now audible.com is offering Scientific American listeners a free audio book of your choice. For details go to aud

发表于:2018-12-24 / 阅读(27) / 评论(0)

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VOA慢速英语--科学家在污水中发现大量的贵金属

Scientists Find Large Amounts of Precious Metals in Wastewater In recent months, stories about sewers getting clogged have made international headlines. For example, a so-called fatberg, a mass of grease and diapers, clogged London's sewers. A new st

发表于:2019-01-03 / 阅读(97) / 评论(0)

2017年VOA慢速英语(十一)月

VOA标准英语2012--Wastewater Key to Sustaining Life

Wastewater Key to Sustaining Life The world population is growing rapidly and is expected to reach 9 billion by 2050. While efforts are underway to ensure theres enough food, one scientist is warning there may not be enough water. Professor Stanley G

发表于:2019-01-13 / 阅读(63) / 评论(0)

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VOA常速英语2007年-ADB: Asian Governments Need to Improve Water Ma

By Claudia Blume Hong Kong 11 December 2007 The Asian Development Bank says that governments in the region need to improve the management of water resources to avoid a crisis in water security. Claudia Blume reports from VOA's Asia News Center in Hon

发表于:2019-02-05 / 阅读(54) / 评论(0)

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alternating e.m.f.

automatic tracking radar

bled steam type air heater