The sunken sail boat was a glimmer of white on the bottom.
这条沉没的帆船在海底呈一道白色微光。
When the boat is under sail, water forced through the duct turns the blades of a small hydroelectric generator that charges a bank of lithium-ion batteries.
当船在航行时，被迫通过管道的水旋转一个小型水轮发电机的桨叶，发电机给一组锂离子电池充电。
Because of the physics of how force is generated by wind blowing past a sail, tall thin sails generally have more power when the boat is sailing into the wind.
根据风吹过船帆时产生动力的物理原理，当船只航行在风里时，高而薄的帆通常产生更大的力。
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