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木虱會侵害活體植物并啃咬它們的莖。Woodlice attack living plants and gnaw at the stems.這種植物多刺的莖阻礙了魚兒對它的啃咬.The plant's thorny stalk discourages fish from nibbling on it.它的這些用于啃咬的工具永遠不會變鈍, 因為它們自己會使之鋒利起來.These cutting tools never get bl...