Sail area is usually planned by boat designers based on the boat's size, displacement (weight), and hull shape and configuration - not the number of masts or sails.
帆面积通常是由帆船设计者根据帆船的尺寸，重量，船底形状和配置来确定的，而非根据桅杆或船帆的数量。
2
There they saw a boat with a number of fairies in it.
这时他们看到一条小船驶来，里面有几个仙女。
3
As well as immense business success, Branson has personally broken a number of world records for high-speed boat and balloon journeys.