标题：船的结构主要由以下几个部分组成：

🌊 船体是整艘船的基础，它像一个巨大的容器，将水隔开在外，保护乘客和货物安全。船体通常由坚固的钢铁或铝合金制成，形状设计得流线型十足，以减少航行中的阻力，让船跑得更快更稳。

💡 甲板则是船体上方的重要部分，就像房子的屋顶一样，为船上人员提供活动空间。甲板上可能布置着驾驶室、休息区以及各种设备，有的还会有观景台，让人可以近距离欣赏大海的壮丽景色。

⚓ 船舱隐藏在船体内部，是船员和乘客的居住区域。从豪华游轮上的套房到普通船只上的卧铺，船舱的设计考虑到了舒适性和实用性。这里不仅是休息的地方，也是储存食物、淡水和其他必需品的关键区域。

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