While it may be impossible to prevent kids from drinking tap water that may contain trace amounts of chemicals, keeping kids away from lawns recently sprayed with chemicals and freshly dry-cleaned clothes can't hurt.
2015年12月六级真题（第一套）阅读 Section A
柯林斯高阶英汉双解学习词典释义
N-VAR
草坪；草地
A lawn is an area of grass that is kept cut short and is usually part of someone's garden or backyard, or part of a park.