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1·They are dragged deep underground to a hidden continent in the ce nter of the earth.

他们被带到带到地心的一个隐藏的大陆上。

2·Objective To investigate the first and second i nter-mediate host(snail and crab)and the infection rate of Paragonimus in Zhanping city, Fujian province.

目的调查漳平市肺吸虫虫种的第一、二中间宿主及人群的感染率。