发言二：但是，经济的不景气给宠物的拥有者带来了一些麻烦，慈善机构说更多的人把他们的宠物送到动物庇护所。
VOICE TWO:However, the economic downturn is creating problems for some pet owners. The Humane Society says that more people are leaving pets at animal shelters.
我同意第二个发言。
发言人称二氧化碳的含量很高。
A spokesperson commented that levels of carbon dioxide were very high.
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