The word "vessel" includes every description of watercraft, including non-displacement craft and seaplanes, used or capable of being used as a means of transportation on water.

船舶一词，指用作或者能够用作水上运输工具的各类水上船筏，包括非排水船舶和水上飞机。

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We can build mathematical models to render a simplified description of, say, liquid in a vessel, but to completely describe it with mathematics would require an infinite number of variables.

FORBES: Computing Desire