1. Ragweed pioneers idle fields.
豚草常是闲置耕地的先锋植物。

《21世纪大英汉词典》

2. 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。

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3. Patients who demonstrated to severe rhinitis symptoms upon exposure to ragweed were admitted to the study.
暴露于豕草而激发严重鼻炎症状并证实得到缓解的患者加入该研究。

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4. Patients who demonstrated to severe rhinitis symptoms upon exposure to ragweed were admitted to the study.
暴露于豕草而激发严重鼻炎症状并证实得到缓解的患者加入该研究。

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5. " Persons may develop allergies after exposure to almost any substance, such as cat hair, ragweed, or house dust. Doctors do not know why only some individuals develop allergies."
有人几乎在接触任何物质后,如猫毛,豚草,室内灰尘,都会产生过敏反应。医生不知道为什么只有一部分人才出现过敏反应。

-- 来源 -- 英汉 - 翻译样例 - 生命

6. coarse perennial ragweed with creeping roots of dry barren lands of southwestern United States and Mexico.
生长于美国西南部和墨西哥干燥贫瘠土地的粗糙的多年生豚草,有匍匐根。

-- 来源 -- 汉英 - 翻译参考

7. plants with heads composed of many florets: aster; daisy; dandelion; goldenrod; marigold; lettuces; ragweed; sunflower; thistle; zinnia.
植物顶部有许多小花;紫苑;雏菊;蒲公英;白毛茛;万寿菊;莴苣;豚草属;向日葵;蓟;鱼尾菊。

-- 来源 -- 汉英 - 翻译参考

8. pollen of the ragweed plant is a common allergen.
豚草属植物的花粉是常见的过敏原。

-- 来源 -- 汉英 - 翻译参考

9. The following means of making a living are, according to New York City statues, illegal: the skinning of horses or cows, the growing of ragweed, and the burning of bones.
根据纽约自由雕像的宣言,下列谋生方式是不合法的:剥牛皮或马皮,种植豚草以及焚烧尸体。

-- 来源 -- english.hzinfo.com