ragweed怎么读/ragweed的发音
英： 美：
ragweed是什么意思
n. 豚草
[医] 豚草, 豕草
n. any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
ragweed的用法和双语例句
1. Pollen of the ragweed plant is a common allergen.
豚草属植物的花粉是常见的过敏原。
2. Ragweed pioneers idle fields.
豚草常是闲置耕地的先锋植物。
3. For 75 percent of those 35 million, ragweed is the primary allergen.
对于这3500万人的75%来说，豚草是首要过敏原。
4. Limit your outside activities if you are bothered by ragweed and mold.
当你受豚草和霉菌困扰时，尽量限制户外活动。
5. Whether the trigger is pollen or ragweed, suffering during allergy season is no fun.
不管让你过敏的是花粉或者豚草，在过敏季节要经受的煎熬滋味可一点也不好。
6. People with ragweed allergies are more likely to have a reaction to echinacea.
对豚草过敏的人更可能由紫锥菊引发生理反应。
7. Dating sediments using ragweed and nuclear fallout.
利用豚草及核放射物对沉积物进行年代推定。
8. Ragweed that seems to be knitted out of yellow wool.
豚草好像是由黄色的羊毛织成的。
9. Chamomile is part of the family that includes ragweed and chrysanthemum.
洋甘菊属于包括豚草和菊科在内的植物科。
10. Ragweed can cause severe hay fever and asthma in sensitive individuals.
豚草可导致敏感个体出现严重的花粉热和哮喘。