名词
中文翻译：Unknown
同义词：
['hollow particle', 'hollow sphere', 'hollow shell', 'hollow nucleus例句：1. The hollow granules in the soil are filled with air.（土壤中的空心颗粒充满了空气。）']
例句：
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1. The hollow granules in the soil are filled with air.
土壤中的空心颗粒充满了空气。
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2. The hollow granules are made of cellulose, which is a type of plant fiber.
这些空心颗粒是由纤维素制成的，它是一种植物纤维。
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3. Hollow granules can be used as a substitute for sand in construction projects.
空心颗粒可以用作建筑项目中的沙子替代品。