IL-2 can strength the sterilization ability of immunocyte to pathogens.

The principle and application progress of PCR technique about pathogenic microbes in water environment

水环境中病原微生物PCR法检测原理及应用进展

PCR detection of the pathogen microbes in prostatic fluid of chronic nonbacterial prostatitis

用PCR检测慢性前列腺炎的病原微生物

Development and application of an ultra-fast DNA extraction method of pathogenic microorganism

病原微生物DNA的超快速提取方法建立与应用

Experimental Studies on DNA Biosensors for Rapid Detection of Pathogenic Microorganisms

DNA生物传感器快速检测病原微生物的实验研究

Advances in the research of the functions of insect antibacterial peptides against pathogenic organisms

昆虫抗菌肽对病原微生物作用的研究进展

Objective To investigate the effects of pathogenic organisms on chronic prostatitis.

目的探讨病原微生物在慢性前列腺炎发病中的作用。

Can you imagine what future schoolbags will be like?

你能想象未来的书包会是什么样子吗?

A new style of schoolbags has appeared in recent years.

近年来出现了一种新型的书包。

Students can also get Mickey Mouse book bags as well as bilingual books, flashcards and CDs that feature Disney characters, much of them otherwise unavailable in China.

学生还可以得到米老鼠书包和有关迪士尼形象的双语图书、抽认卡和CD，其中大多东西在中国其他地方是没有的。

In December 1999, doctors in Milan reported in The Lancet that 34.8 percent of Italian schoolchildren carried more than 30 percent of their body weight at least once a week, "exceeding limits proposed for adults."

1999年12月，米兰的医生们在《柳叶刀》（The Lancet）上发表报告称，每周至少有一次，34.8%的意大利学童要背负超过自身体重30%的书包，“这超出了向成年人推荐的负重上限。”

in school, he carried my schoolbag for me and got7 my lunch for me.

在学校，他替我拿书包（schoolbag），并帮我打午饭。

A: I'm not sure. Maybe I will buy a schoolbag. What's your plan?

A：我不确定。也许我会买个书包。你的计划是什么?

I put the paper into my schoolbag secretly and ran out of the room.

我偷偷地把试卷放进书包，然后跑出了房间。

But have you ever thought about the history of the schoolbag?

但是你想过书包的历史吗?

My schoolbag has helped me a lot in my study.

我的书包已经帮了我很多在我的书房里。

This bag was left behind after the class.

这个书包是有人下课后落下的。

Hundreds of years later, people developed a new kind of schoolbag called the budai, or the "hip-pocket".

几百年后，人们发明了一种新的书包，叫做布袋，或“后袋”。

That bag is very colorful.

那个书包非常鲜艳。

People consider the bamboo boxes to be the earliest schoolbags.

人们认为竹盒子是最早的书包。

The umbrella can be manufactured in back-shoulder-carrying schoolbag manufacturing plants.

本伞可供背挎式书包制造厂生产。