单词:mine waste water
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[00:04.99]Lesson 21 1 Dialogue [00:11.23]Mr Zhr is taking a school party to the seaside. [00:17.11]They have just arrived at the beach. [00:21.05]MR ZHU:OK,everyone.Less noise,please! Gather round and listen carefully. [00:27.90]First we are going to
[00:02.49]第六单元 主要地复习 [00:04.99]Lesson 21 1 Dialogue [00:08.07]第二十一课 1 对话 [00:11.15]Mr Zhu is taking a school party to the seaside. [00:14.08]朱先生在海边开一个学校派对. [00:17.01]They have just arrived at
Lesson 58: [00:03.40]Stop Pollution!In North America, [00:08.96]many students help their schools make less pollution. [00:14.73]They join environment clubs. [00:18.99]In a club,people do things together. [00:24.03]In an environment club,people work t
Human Waste Killing Caribbean Coral In the first documented case of a human pathogen infecting a marine species, U.S. scientists say a bacterium in untreated human sewage is killing coral along the Florida coast and in the Caribbean Sea. The finding
AS IT IS 2015-08-06 Olympic Committee to Test Rio's Water for Viruses Rio de Janeiro, Brazil is busy preparing for the 2016 Olympics. On Sunday, the International Olympic Committee said it will begin testing the waters where swimmers and other athlet
Waste Not, Want Not Next week (8/26-31) is World Water Week, and this years theme is Water and Food Security. Some 25 hundred officials, policymakers and scientists will gather in Stockholm for the largest annual meeting on water development issues.