如果我们不采取行动保护我们周围的环境，情况会更糟。
It will be even worse if we don't take action to protect the environment around us.
如果我们不采取行动进行保护，部分热带雨林可能会消失。
Some rainforests are likely to disappear if we don't take action to protect them.
如果我们不采取行动，我们经济的齿轮将停止转动。
"If we fail to act, the gears of our economy will grind to a halt," said John McCain.
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