The box of the cover is prevent from inbreaking of the foreign body of dust etc.

带有封盖的箱子有效于防止外部灰尘等异物的入侵。

youdao

Objective To summarize the treatments and outcomes of 186 cases(188 eyes) ocular foreign body of chestnust thorns.

目的总结186例（188眼）板栗刺致眼异物伤的治疗经验及疗效观察。

youdao

In autoimmune diseases, like arthritis or Crohns disease, t cells mistake fragments of the body's own cells for foreign invaders, leading to the body launching an attack upon itself.

在自身免疫系统疾病中，如关节炎或克隆恩氏病，T细胞误把自身细胞碎片当作外来入侵者，导致自己攻击自己。

youdao

Israel's Foreign Minister Avigdor Lieberman spoke on the telephone with United Nations Secretary General Ban Ki-moon and accused the world body of "prejudice" and "hypocrisy."

VOA: standard.2009.10.23

The study of immunology is the study of mechanisms that your body uses to protect itself from mainly from foreign pathogens like viruses and bacteria.

免疫学研究身体,采用何种机制来保护自身,免受外源病原体如病毒和细菌的伤害

耶鲁公开课 - 生物医学工程探索课程节选

"A pregnant woman has to accommodate this foreign body of the growing fetus, so there is an immunological shift that occurs in pregnancy, " she said.

CNN: Study: H1N1 virus more severely affects pregnant women

Meanwhile, the Foreign Office has confirmed it will help to return the body of Mr Karim to northern Iraq.

BBC: NEWS | UK | Wales | South West Wales | Refugee murder: youth released

Japanese Foreign Ministry spokesman Hatsuhisa Takashima said a body matching the description of Koda was found by U.S. forces between Baghdad and Tikrit.

CNN: Japan: Hostage killed in Iraq