英语释义
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n. An asexual zooid, usually forming one of a series of
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larval forms in the agamic reproduction of various trematodes and other
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parasitic worms. The sporocyst generally develops from an egg, but in
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its turn produces other larvae by internal budding, or by the
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subdivision of a part or all of its contents into a number of minute
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n. Any protozoan when it becomes encysted produces germs by