Underframing
底层框架的材料或结构部件
🗣️ 情景例句
Maybe you could come to visit me in Greece?
也许你可以到希腊来看我？
We can't hear clearly.
我们不能听得很清楚。
His great flight lasted thirty-seven minutes.
他这次伟大的飞行持续37分钟。