我在一周之内就收到了三封谈论这个问题的邮件：“这不起作用，海茵博士！”
One week brought three emails all dealing with the same issue: "it didn't work, Dr." Heins!
以前，那里的河水清澈见底，在阳光的照耀下波光粼粼，四周绿树成荫，绿草如茵，花儿姹紫嫣红，艳丽无比，还时不时有蝴蝶飞来采花蜜呢！
Before, where the river bottom, sparkling under the sun, surrounded by trees and lush, flowers are very beautiful flowers, colorful, still occasionally butterfly fly to collect nectar!
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