在实验室条件下观察了秃病蚤蒙冀亚种的叮人吸血能力。
The biting and blood-sucking abilities of the rodent flea, Nosopsyllus laeviceps kuzenkovi on the forearms of mankind were observed under the laboratory conditions.
位于中国河北省西北部，地处京、冀、晋、蒙四省市区交界处，是北京的北大门，也是历史上兵家必争之地，重要的地理文化名城。
Located in hebei province, is located in the northwest of China, hebei, shanxi, China, Beijing junction four of the north gate, which is the history and geography of the important cultural city.
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