N a square sail carried on a yard set on a topmast 上桅帆
Top sail spinnaker and use, can reduce the lift and help to stabilize sailing vessels.
使用三角帆和顶帆，可以减小升力，有助于船只稳定航行。
Such experience helped him to sail to the top of his class at college in Egypt.
这些经验帮助他在埃及大学读书时成绩名列班级前茅。
First, I cut out my top view and side view of the sail.
首先，我切断我的顶视图和侧视图的船帆。
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