第1个回答 2009-06-16
For our future,we should protect our enviroment.
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第2个回答 2009-06-16
for our own future ,we should protect the environment
第3个回答 2009-06-16
Protecting the environment for our future.
第4个回答 2009-06-16
We should protect our environment, for the sake of our future!