Of the children they tracked, 140 had developed a peanut or tree nut allergy by 2009.

研究发现，他们跟踪的这些儿童中，到2009年有140人对花生或坚果过敏。

youdao

Pecans are the only major tree nut native to the U.S., which produces about 80 percent of the world's crop.

美国山核桃是起源于美国的主要坚果树种，全世界百分之八十的山核桃产量来自于美国。

youdao

Pecans are the only major tree nut native to the U. S., which produces about 80 percent of the world's crop.

美国山核桃是起源于美国的主要坚果树种，全世界百分之八十的山核桃产量来自于美国。

youdao

According to Allergy UK, peanut and tree nut allergy is the most common food allergy in adults and children.

BBC: Store pulls monkey nuts from shelves over 'peanut warning'

Dr. ELIZABETH MATSUI (Johns Hopkins University): We still need to be very vigilant about protecting the children who are still peanut and tree nut allergic.

NPR: Studies Predict Odds of Outgrowing Nut Allergies

They are also aiming to make Totnes the nut tree capital of Britain.

CNN: The towns taking control of their future