寄生虫可能杀死我们在越南战斗的士兵

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parasite – n. an animal or plant that lives in or on another animal or plant and gets food or protection from it

bile duct – n. passages in the body that carry bile, or waste, from the liver and gallbladder through the pancreas to the duodenum, which is a part of the small intestine

sample – n. a small amount of something that gives you information about the thing it was taken from

cyst – n. a growth filled with liquid that forms in or on your body

swell – v. to become larger than normal

inflammation – v. a condition in which a part of your body becomes red, swollen, and painful

jaundiced – adj. having a disease that causes your skin to turn yellow; affected with jaundice

itchy – adj. feeling or having an itch

stage – n. a particular point or period in the growth or development of something