Envelopes
n. 信封( envelope的复数形式 )
🗣️ 情景例句
They'll just make him sad.
那些只会让他悲伤。
All produets have to go through five checks in the whole process.
所有产品在整个生产过程中得通过五道质量检查关。
Behind the house there is a tree.
房子后面有一棵树。