main deck

例句：

1. 1. The captain's main deck is where he makes important decisions.
   船长的主甲板上，他做出重要的决定。
2. 2.The ship's main deck is the area where crew members work and interact with passengers.
   船上的主甲板是船员工作和与乘客互动的区域。
3. 3. The main deck is usually reserved for important events like weddings or naval ceremonies.
   主甲板通常用于重要事件，如婚礼或海军仪式。