由 jpichiban 英国沃尔索尔运河中发现氰化钠，这种化学物质对健康构成严重威胁，导致重大事件发生。
## Original Title: Major incident over canal toxic chemical spill
## Article Content:
Sodium cyanide, which can pose a serious health risk, is discovered in the canal in Walsall.
Original article: https://www.bbc.com/news/articles/c5yk7nd8r9do