And she often wondered what it might be doing to her unborn child.
她时常担心这会对她未出生的`孩子产生什么影响。
But new research finds that frogs might be doing even worse than we thought.
但是新的研究发现青蛙的实际情况或许要我们想像的还糟糕。
It often takes a disaster to make us realize that we might be doing things wrong.
通常只在灾难发生后才让我们意识到我们可能哪里做错了。