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1·The ships had one large square sail.

该船有一个大广场帆。

2·Ships with square sails sail fairly efficiently with the wind abaft.

带有方形帆的船随风疾驰而去。

3·And suddenly they had a big bark ship with a beautiful white square sail.

突然之间，他们就有了一只大大的树皮船，还带着一张美丽的白色方帆。

4·And suddenly they had a big bark ship with a beautiful white 13 square sail.

突然之间，他们就有了一只大大的树皮船，还带着一张美丽的白色方帆。

5·The height or vertical dimension of a flag or of any square sail other than a course.

降下桁木，横帆之外的横帆或旗的高度或垂直距离。

6·Finally, here’s a large three-masted square-rigger flying five tiers of square sails and several head sails, with a lateen sail aft.

最后，来介绍这种巨大的三桅杆方帆船，带有五对方形帆和数面前帆，船尾还有一面大三角帆(lateen sail)。

7·Earlier this year, the team put Clemmons's unlikely theory to the test, using a 40-square-metre rectangular nylon sail.

今年早些时候，研究小组使用了一个40平方米的长方形尼龙帆，对克莱蒙斯的不可能理论进行了测试。

8·Therefore square-riggers cannot sail upwind.

因此方帆船无法逆风航行。

9·In all, a ketch carries about the same total square footage of sail area as a sloop of the equivalent size.

总而言之，一艘双桅帆的总体帆面面积和一艘同样尺寸的单桅帆差不多。

10·Update: The Planetary Society plans to launch a 105-square-foot solar-sail craft into space this fall.

最新消息：美国行星学会(The Planetary Society)计划在今秋发射一艘105平方英尺(约10平方米)的太阳帆太空船。