气候变化让过敏的人更痛苦

短语讲解：

1. More than 50 million people in the United States suffer from allergies, and their numbers are growing.

suffer from患(某种病); 受(某种病痛)折磨
例句：You must have suffered from a cold.
你一定是感冒了。

2. New studies suggest that climate change may be at least partly to blame.

climate change气候变化
be to blame对某事应负责任的; 应受责备的
例句：She was in no way to blame.
绝不应该责备她。

3. At the U.S. Department of Agriculture's research center near Washington, D.C., plant physiologist Lewis Ziska said weeds - defined as any unwanted plant - appear to be thriving in today's atmosphere, which is richer in carbon dioxide, or CO2.

appear to似乎，好像
例句：The old man appears to be in good health.
这位老人显得健康。

4. If you go forward in time to the 1990s and look at the CO2 concentration at that time, the average ragweed produced about 10 grams of pollen.

go forward前进
例句：The building of the dam is going forward without any trouble.
水坝建设工程进展顺利。
in time及时, 不迟
例句：The doctor came in time to save his life.
医生及时来抢救他的生命。

5. If you go into the future 50 years from now, at the [expected] CO2 concentration, that ragweed will produce 20 grams of pollen.

go into进入
例句：They went into the hall together.
他们一道走进大厅。

6. He said the more pollen a weed puts out, the more potential harm there is to public health and to agriculture, where weeds can steal water, soil nutrients and light from commercial crops.

put out生产; 制造
例句：The engine puts out thirty horsepower.
这台发动机可产生30马力。

7. “This is common ragweed coming up in the spring," he said.

come up 发生，出现
例句：I expect something to come up soon.
我预料很快就要出事的。

8. “Allergies are thought to cost the public somewhere in excess of $8 billion to $10 billion every year, in both direct and indirect costs," said Zeldin.

in excess of 多于, 超出
例句：Luggage in excess of 20kg is taxed.
行李超过20公斤要付费。

9. Zeldin also said there are many causes for allergies, and people with allergies often are sensitive to more than one weed.

be sensitive to对…敏感
例句：Dogs are sensitive to smell.
狗封气味敏感。

10. His latest research on the subject has shown that environmental and genetic factors play a role as well.

play a role 扮演角色;发挥作用
例句：Fancy mathematics will continue to play a role , to be sure .
顶级的数学家们将毫无疑问继续扮演重要的角色。