By 21 days post-challenge, gross and microscopic lesions of lymph nodes and lungs in non-vaccinated but challenged pigs were significantly more severe than those found in vaccinated groups.

在攻毒后21天剖检，攻毒对照猪的淋巴结和肺脏的大体和显微病变都比免疫组猪严重。

youdao

The post will give him a powerful political base from which to challenge the Kremlin.

这个职位将为他挑战克里姆林宫提供一个有力的政治基础。

《柯林斯英汉双解大词典》

A recent survey clearly shows that the biggest challenge for post-80s newlyweds is getting used to their roles in their marriage.

最新的一项调查很清晰地显示对于80后的新人们最大的挑战是适应自己的婚姻。

youdao

NATO's recent summit in Washington, the war in Kosovo and the post-war challenge of once and for all de-balkanising the Balkans could soon cast Europe in a more impressive light.

ECONOMIST: Who��ll carry Kosovo?

It has not reorganized itself, and the old and decrepit former U.S.IA bureaucracy now under its control, to face the post-Cold War challenge.

CENTERFORSECURITYPOLICY: Center for Security Policy | Getting Serious About Strategic Influence: How to move beyond the State Department��s legacy of failure | Page: 2

This represents a clear challenge in the post-September 11 world where information sharing is key.

CENTERFORSECURITYPOLICY: Policing in an Age of Terror: Prevention is Best