运河中的氰化物“可能在一周内清除”

沃尔索尔运河污染事件中，氰化钠是排放到运河中的三种物质之一。有消息称，氰化物可能会在一周内从运河中清除。

Original Title: Cyanide in canal ‘could be removed in a week’
Article Content:
Sodium cyanide is one of three substances released into the canal in the incident in Walsall.

Original article: https://www.bbc.com/news/articles/c1epn5ezx9go