Rarefaction
n. 稀薄化, 稀薄\\n[医] 稀疏[状态], 疏松[状态]
✅ 同义词
🗣️ 情景例句
Food is necessary to maintain life.
食物是维持生命所必须的。
Children enter school at the age of five,don't they?
孩子们在5岁时入学吗？
You must never jump the queue.
决不可“夹塞儿”。