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。
For 75 percent of those 35 million, ragweed is the primary allergen, he added.
对于这35,000,000人的75%来说，豚草是首要过敏原，他补充道。
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。
The third resembles one of the most rampant allergens of them all, a ragweed protein that causes hay fever.
第三个与造成花粉过敏的豚草蛋白类似，该蛋白可说是过敏原里最厉害的一个了。
At Johns Hopkins School of Medicine's Asthma and Allergy Center, clinical director Peter Socrates Creticos is studying what is essentially a ragweed vaccine.
PeterSocrates Creticos是约翰·霍普金斯医学院的哮喘及过敏研究中心的临床总监，他正在研究豚草疫苗。
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。
TOLAMBA is designed to target the underlying cause of seasonal allergic rhinitis caused by ragweed.
TOLAMBA是针对由豕草引起的季节性变应性鼻炎的根本原因设计的。
Results Of the patients, 88.86% showed positive results of inhaled allergens which were mainly pollen and ragweed;
结果吸入性过敏原阳性率为88.86%，其中以花粉、豚草为主要致病过敏原；
According to this system, the risk value for giant ragweed was 83 and it was considered as a quarantine pest with high risk.
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。
Atopy was defined as a positive skin-prick test to mites, cat, Alternaria, Cladosporium, grass, birch, Parietaria, olive, or ragweed.
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。
Conclusion Significant difference exists between the extract of artemisia pollen and ragweed pollen, with the former being more complicated.
结论艾蒿花粉与豚草花粉提取液蛋白组分差异较大，前者更复杂；
Tropical diseases such as malaria, dengue fever, and yellow fever are reaching temperate regions, and ragweed and poison ivy thrive in the hothouse world.
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。
To suppress the spread of the ragweed, there have been a lot of studies on their chemical control, physical control, plant displacement and biological control.
为抑制其种群蔓延，前人开展了化学防治、物理防治、植物替代和生物防治等对豚草的防控研究。
The allergy season is really several seasons. Trees start scattering their pollen in early spring, followed by grasses, and then ragweed kicks in during the summer and runs through fall.
过敏季节一般会有好几个月，首先是树开始在早春传播花粉，然后是草，接着就是豚草，它可以在整个夏天和秋天一直传播花粉。
豚草常是闲置耕地的先锋植物。
豚草常是闲置耕地的先锋植物。
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