A traditional flat-bottom boat sails off the island of Norröra in the Stockholm archipelago, where the holiday is celebrated best.

在斯德哥尔摩群岛，有一艘传统的平底船驶出诺劳拉岛，这里是节庆气氛最热烈的地方。

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If the glass were kept hot enough, it would flow over the molten tin until the top surface was also flat, horizontal and perfectly parallel to the bottom surface.

如果玻璃保持足够的温度，它就会在熔化的锡中流动，直到顶部表面也变得平整、水平，与底部表面完全平行。

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So engineers added details such as a gently sloping rear hatch, a flat bottom and small creases and fins that manage airflow.

因此工程师们添加了例如小坡度后盖、平整的底板以及能控制气流的小型的褶皱和鳍翼之类的细节设计。

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Flat-bottom boats have carried eighteen million cubic yards of dredged material to the island.

VOA: special.2009.10.06

The flat-bottom boat balanced precariously just barely above water level, a skilled rower standing and pushing gondola-style from the back.

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However, Mackay's team doubled their advantage when Mutch's looping cross evaded both Martin Taylor and Matthew Connolly as they challenged for the ball and nestled in the bottom corner with Kenny caught flat-footed.

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Deep Flight Aviator's wings, viewed in cross section, look exactly like an airplane's, upside-down: They're curved on the bottom, flat on top.

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