寄生虫

jì shēng chóng parasite; drone

病

bìng illness; CL:場|场[chang2]; disease; to fall ill; defect

感染率

gǎn rǎn lǜ rate of infection (usu. of a disease)

gǎn rǎn lǜ rate of infection (usu. of a disease)

国家

guó jiā country; nation; state; CL:個|个[ge4]

排行

pái háng to rank; ranking; seniority (among siblings)

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