pulp cavity

例句：

1. 1.The apple's pulp cavity is filled with seeds and juice.
   苹果的果肉腔充满了种子和汁液。
2. 2.The scientist discovered a new way to extract oil from the pulp cavity of the fruit.
   科学家发现了一种从果实果肉腔提取油的新方法。
3. 3.The plant's pulp cavity is used for storage and respiration.
   植物的果肉腔用于储存和呼吸。