Caissons
(caisson 的复数) n. 弹药箱, 弹药车, 沉箱(水下工程用)\\n[医] 沉箱
🗣️ 情景例句
Have you ever done any work in this field?
你曾经干过这一行吗？
He's not in. May I take a message for him?
他不在，我能替他捎个口信吗？
When is the most convenient time for you?
你什么时候最方便？