strengthens the immune system增强身体的免疫系统机能
early exposure to germs早期接触细菌
A new study suggests that early exposure to germs strengthens the immune system.一项新的研究表明，早期接触细菌可以增强身体的免疫系统机能。
in a germ-free environment 在无细菌环境中
be more likely to develop allergies, asthma and other autoimmune disorders更容易出现过敏、哮喘和其他自身免疫性疾病
It found that adult mice raised in a germ-free environment were more likely to develop allergies, asthma and other autoimmune disorders.研究发现，在无细菌环境中长大的成年小鼠更容易出现过敏、哮喘和其他自身免疫性疾病。
rheumatoid/ umtd/ arthritis /ɑθrats/风湿性关节炎
attacks the joints对关节造成损伤
an inflammatory /nflmtri/bowel/bal/condition 炎症性肠道疾病
juvenile/duvnal/diabetes/dabitiz/青少年糖尿病
They include rheumatoid arthritis, which attacks the joints; Crohns disease, an inflammatory bowel condition; and juvenile diabetes.这些疾病包括风湿性关节炎，对关节造成损伤;克罗恩病，炎症性肠道疾病;和青少年糖尿病。
an autoimmune/tmjun/disorder 一种自身免疫性疾病
Hay fever, a common allergy, is also an autoimmune disorder.干草热是一种常见的过敏症，也是一种自身免疫性疾病。
antibacterial/ntibktril/soaps 抗菌肥皂
weaken immune systems削弱免疫系统
They proposed that the increasing use of antibacterial soaps and other products, especially early in life, could weaken immune systems.他们提出，增加使用抗菌肥皂和其他产品，特别是在出生阶段，可能会削弱免疫系统的辨别能力。
hay fever 花粉过敏
asthma 哮喘
Early-life exposure to microbes is a very important determinant of later life sensitivity to allergic and so-called autoimmune diseases, such as hay fever, asthma, inflammatory bowel disease and others.早期接触微生物是晚年对过敏和所谓的自身免疫性疾病的提前预防,如花粉过敏、哮喘、炎症性肠病以及其他疾病。
fight infection对感染或炎症起作用
These normally fight infection.这些细胞通常对感染或炎症起作用。
play in a reasonable amount of dirt 在常规的泥土中玩耍
Let your kids play in a reasonable amount of dirt and get outside and get exposed to a diversity of things."让孩子在常规的泥土中玩耍，走出家门，接触各种各样的事物。
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