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

利用豚草及核放射物对沉积物进行年代推定Dating sediments using ragweed and nuclear fallout

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豚草好像是由黄色的羊毛Ragweed that seems to be knitted Out of yellow wool

当你受豚草和霉菌困扰时，尽量限制户外活动。Limit your outside activities if you are bothered by ragweed and mold.

对豚草或或春黄菊过敏者请防止使用本品。Avoid this product if you are allergic to ragweed or daisy-like flowers.

如果对太阳花，豚草和菊花类过敏的请不要服用此产品。Avoid this product if you are allergic to sunflowers, ragweed or daisy-like flowers.

两个肮里肮脏的长着亚麻色头发的小男孩正在前院的杂草丛里挖什么东西。The two grubby small boys with two-coloured hair who were digging among the ragweed in front yard.

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受试者在2006年豕草季节开始之前超过6周时接受6个剂量的TOLAMBA治疗。Subjects received six doses of TOLAMBA over six weeks prior to the start of the 2006 ragweed season.

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。Patients who demonstrated to severe rhinitis symptoms upon exposure to ragweed were admitted to the study.

然而，对豚草或菊花花粉过敏的人可能同样会对紫锥菊过敏。However, people who are allergic to ragweed or daisy pollen can have a similar allergic reaction to echinacea.

应用该体系对三裂叶豚草进行了风险评估，得出其风险值为83，属高度危险的检疫性有害生物。According to this system, the risk value for giant ragweed was 83 and it was considered as a quarantine pest with high risk.

密歇根土地上第一年的种子是每年都开花的植物，接着被更坚韧的像沙果草和豚草取代，灌木成荫压倒了花丛。The first year's weeds on the Michigan plot are annual flowering plants, followed by tougher perennials like crabgrass and ragweed.

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特应性定义为对螨类、链格孢属、分子孢子菌属、草、桦木、墙草属、橄榄或豚草属皮肤划痕实验阳性。Atopy was defined as a positive skin-prick test to mites, cat, Alternaria, Cladosporium, grass, birch, Parietaria, olive, or ragweed.

豚草作为一种外来入侵杂草，严重影响着生态环境、农业生产以及人类健康。The ragweed Ambrosia artemisiifolia, an alien invasive weed, can profoundly influence natural ecosystems, agriculture, and human health.

本文对豚草防治的主要方法进行了综合论述，为豚草综合防治体系的建立提供参考。Therefore, the main ways of control of ragweed especially biological controls were reviewed in order to found integrative control system of ragweed.

到6至7岁时，这835名儿童中，过半的人都有各种各样的过敏症，对常见的过敏原如尘螨，豚草和猫等产生过敏。At six to seven years old more than half of the children were evaluated for their sensitivity to common allergens such as dust mites, ragweed and cats.

通过对美洲豚草、三裂叶豚草、多年生豚草的茎杆、叶片、花序、总苞等的特征比较研究，弄清它们的形态特点，为检疫鉴定提供资料依据。A comparative study on the morphological characteristic of stem, leaf, anthotaxy and involucrum of three kinds of ragweed weed—Ambrosia Artemisiifolia L.

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疟疾、登革热和黄热病等热带疾病正在侵袭温带地区，豚草和毒藤也在温室气候里茁壮成长。Tropical diseases such as malaria, dengue fever, and yellow fever are reaching temperate regions, and ragweed and poison ivy thrive in the hothouse world.

这些发现是基于去年国家野生动物联合会豚草的生长速度和花粉数量随着全球变暖增加的分析得出的。The findings correlate with analysis last year by the National Wildlife Federation that found ragweed growth rates and pollen counts increased with global warming.

目的比较艾蒿花粉和豚草花粉粗浸液中的蛋白质组分，探讨两者间有无共同抗原。Objective To compare proteins in the extract of Artemisia pollen and ragweed pollen and to examine the existance of common antigen between the two types of pollens.