双语例句
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The redia feeds on snail tissue and buds off other larval stages through asexual reproduction.
雷蚴靠进食蜗牛的组织存活，并通过无性繁殖自身来渡过其幼虫阶段。
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Once inside the snail, the miracidium develops into a 1 to 2 mm (0.04 to 0.08 in) long, saclike stage called a redia.
一旦进入了蜗牛的体内，毛蚴发育成为长1到2毫米（0.04到0.08英寸），这一囊状阶段称为雷蚴。