第一个句子 Nate the Great 第16页中的while the trail was hot.i hate cool trails.前面是她朋友的画弄丢了，第二天才打电话让nate去给她找，nate说了这样的话。原文如下：
“tell me about your picture,”i said.
"i painted a picture of my dog, Fang,"Annie said.
"I put it on my desk to dry. then it was gone. It happened yesterday."
"You should have called me yesterday,"I said ,"while the trail was hot.i hate cool trails,Now, where would a picture go?"
第二个句子 在EXtra Fun Activities 中的第8页中的purr-fect怎么理解？
Rosamond likes to color.And she likes her cats.These cat crayons are purr-fect for her.you'll like them,too.
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Trail是某人某物经过某处留下的痕迹，可能是脚印啊味道啊等等等等。举例，一只鸭子经过一条雨后小路，踩了一串脚印，这串脚印刚开始可能还带着鸭子脚上的余温呢，那么这时在这个trail 还hot的时候，我们可以很容易从脚印的形状判断是谁经过。但如果过了半小时，或半天，trail已经went cold，这期间可能风吹过太阳晒过，甚至小鸡小羊同样踩过这条路，把小鸭脚印弄的支离破碎，甚至完全覆盖，这时再想做判断半小时前或半天前是谁经过就难了。