Bondi Beach has reopened for swimmers after around 2,000 black balls washed ashore1 in Sydney this week.
The tar2-like spheres started appearing on Tuesday and multiple beaches were shut due to fears they could be highly toxic3.
Workers in orange boiler4 suits and face masks have been collecting the balls over the last few days.
They were initially5 believed to be tar balls, formed when oil comes into contact with debris6 and water, often as a result of oil spills or seepage7.
"Based on advice from the Environment Protection Authority, we can now confirm the balls are made up of fatty acids, chemicals consistent with those found in cleaning and cosmetic8 products, mixed with some fuel oil," said New South Wales maritime9 boss Mark Hutchings.
He said they were still washing up on Friday but in fewer numbers.
1 ashore [əˈʃɔ:(r)] 第7级 | |
adv.在(向)岸上,上岸 | |
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2 tar [tɑ:(r)] 第7级 | |
n.柏油,焦油;vt.涂或浇柏油/焦油于 | |
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3 toxic [ˈtɒksɪk] 第7级 | |
adj.有毒的,因中毒引起的 | |
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4 boiler [ˈbɔɪlə(r)] 第7级 | |
n.锅炉;煮器(壶,锅等) | |
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5 initially [ɪˈnɪʃəli] 第8级 | |
adv.最初,开始 | |
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6 debris [ˈdebri:] 第8级 | |
n.瓦砾堆,废墟,碎片 | |
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7 seepage [ˈsi:pɪdʒ] 第12级 | |
n.泄漏 | |
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