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n. 反应，反作用力，化学反应
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- Allergies are getting more common. In 2012, more than 73 million kids in the U.S. had a reaction to something.
- 过敏是越来越常见。2012年，美国超过7,300万的孩子对某物有过敏反应。
- Scientists say it's because modern life is too clean for children.
- 科学家们表示，这是因为现代生活太干净了。
- Their immune systems get complacent without infections to fight. But there are still ways to cut down on children's allergies especially if prevention starts early.
- 他们的免疫系统没有对抗感染。但仍有办法减少儿童过敏，特别早期预防。
- What an expectant mother eats can offer some protection.
- 孕妇吃什么东西可以提供一些保护。
- Eating peanuts and wheat and drinking milk can lower the risk that her child will be allergic to them.
- 吃花生小麦和喝牛奶可以降低孩子将来对其过敏。
- And if kids eat these foods four to six months after they're born, their immune systems are more likely to accept them without a fuss.
- 孩子出生后如果食用这些食物四至六个月，他们的免疫系统更容易接受它们。
- Getting a dog or cat early in life can prevent reactions to pet dander.
- 早期养一只狗或猫可防止宠物毛屑反应。
- And growing up on a farm instead of in an urban environment exposes kids to a higher microbe load and makes them more resistant to allergies.
- 在农场而不是城市环境中长大的孩子更多的暴露在微生物下，使他们更耐过敏。
- A study of Amish children on isolated dairy farms showed they had especially low risk of asthma.
- 对生活在隔离奶牛场的阿米什孩子的一项研究显示，他们患哮喘的风险特别低。
- Even having more brothers and sisters or going to daycare seems to boost kids' resistance to allergies. We still aren't sure why it happens.
- 甚至有更多的兄弟姐妹或去托儿所似乎可以提高孩子的抗过敏。我们仍然不知道为什么如此。
- So while there isn't a cure for food allergies or asthma, early prevention is one of the best ways to keep the problems from growing.
- 虽然没有治疗食物过敏或哮喘的方法，早期预防是防止问题发展的最好方法之一。
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