Fallbacks
(fallback 的复数) n. 可依靠的东西, 退却\\n[计] 撤退
🗣️ 情景例句
Good morning. Would you please bring me some breakfast?
早上好，可否为我送点早餐？
Is that a book?
那是一本书吗？
They're blue.
是蓝色的。