13.Now most of these farms are hydroponic or aeroponic systems, which means that instead of using soil, they use a substitute material like polyurethane sponges, biodegradable peat moss and even use inorganic materials like perlite and clay pellets.
现在这些农场大多是水培或气培系统,这意味着他们不使用土壤,而是使用聚氨酯海绵、可生物降解的泥炭藓等替代材料,甚至使用
岩和粘土颗粒等无机材料。机翻
「TED演讲(音频版) 2020年1月合集」评价该例句:好评差评指正