caisson
n
1 large watertight box or chamber in which men can work under water (eg when building foundations) 沉箱(工人进行水下作业, 如建底座时所乘的大潜水箱).
2 large box (usu on wheels) in which ammunition is carried 弹药箱; (通常为)弹药车.
🗣️ 情景例句
are important for the sales of your book.
对于你这本书的销售很重要。
Do you have an opinion?
你有意见吗?
An ocean wave passing through deep water causes a particle on the surface to move in a roughly circular orbit,