氰酸盐

例句：

1. 1. This chemical is usedto purify water and remove impurities.
   这种化学物质用于净化水并去除杂质。
2. 2. The worker was exposed to a toxicgas that caused him to lose consciousness.
   这名工人接触到了一种有毒气体，导致他失去意识。
3. 3. Thecyanide in the minewas released into the air, causinga massive explosion.
   矿井中的氰化物被释放到空气中，引发了一场大爆炸。