The etiologic agent may not be apparent on direct smear.

在直接涂片上致病菌可能不明确.

辞典例句

The etiologic agent is dental caries with extension through the root oftooth into the adjacent mandible.

这个病因是由龋齿菌扩散至相邻牙根而导致的.呵呵,试着翻翻,感觉好不专业啊.

互联网

Conclusion Astrovirus seemed an important etiologic agent in young children with acute diarrhea in Shanghai.

结论星状病毒是上海地区婴幼儿病毒性腹泻的又一重要病原.

互联网