Rarefactions
(rarefaction 的复数) n. 稀薄化, 稀薄\\n[医] 稀疏[状态], 疏松[状态]
🗣️ 情景例句
I heard you cheated on your exams.
我听说你考试作弊了。
That house is for sale.It has central heating.
那幢房子是待售的，它有中央暖气系统。
These bags are heavy.
这是些重的盒子。