Underpinning
n. 基础材料, 支承结构
✅ 同义词
🗣️ 情景例句
You're home from school early.
你今天从学校回来得早。
Step by step the ladder is ascended.
登梯需要逐级登。
We're ready to take your order now.
你们现在可以下订单了。