Objestive: To in investigate conditions of Lyme disease and focus of natural infection in border area.

目的：调查边境地区莱姆病和自然疫源地的状况。

youdao

Objestive: To in investigate conditions of Lyme disease and focus of natural infection in border area.

目的：调查边境地区莱姆病和自然疫源地的状况。

youdao