Undercoverage
总量差额
🗣️ 情景例句
Is something bothering you?
有什么事烦你吗？
To facilitate carrying, rope or metal handles are indispensable and should be fixed to the boxes.
为便于搬运，绳子或铁把手不可缺少，并将其固定在箱子上。
My pen dropped on the ground when I was walking in the park.
当我在公园里散步的时候，我的钢笔掉到地上了。