pure benzol

例句：

1. 1.Pure benzol is a colorless, flammable liquid that is used in the production of plastics and chemicals.
   纯苯是一种无色、易燃的液体，用于生产塑料和化学品。
2. 2. Pure benzol can cause respiratory problems when inhaled or ingested.
   纯苯吸入或摄入时会引起呼吸问题。
3. 3.Pure benzol is a dangerous substance that should be handled with caution.
   纯苯是一种危险的物质，应谨慎处理。