sillianliu-
croakv.When a frog or bird croaks, it makes a harsh, low sound.(青蛙或鸟)发出低哑叫声，呱呱叫
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parasiticadj.Parasitic diseases are caused by parasites.（病）寄生虫引起的，寄生物引起的
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fictionn.； Fiction refers to books and stories about imaginary people and events, rather than books about real people or events.小说
