Bivallate
a. 围有两层防护土墙的
🗣️ 情景例句
We want you to go to college, Robbie.
我们希望你上大学， Robbie。
How's your brother?
你的兄弟好吗？
By having to sleep in the open, he gets far closer to the world of nature than most of us ever do.
由于被迫在露天睡觉，他比我们中许多人都离大自然近得多。