And she often wondered what it might be doing to her unborn child.

　　她時(shí)常擔(dān)心這會(huì)對(duì)她未出生的孩子產(chǎn)生什么影響。

　　But new research finds that frogs might be doing even worse than we thought.

　　但是新的研究發(fā)現(xiàn)青蛙的實(shí)際情況或許要我們想像的還糟糕。

　　It often takes a disaster to make us realize that we might be doing things wrong.

　　通常只在災(zāi)難發(fā)生后才讓我們意識(shí)到我們可能哪里做錯(cuò)了。