A key to improving one's technique and stroke efficiency is to improve hip rotation.

提高游泳技术和划水效率的关键是提高转髋的能力。

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A key to improving one 's technique and stroke efficiency is to improve hip rotation.

提高游泳技术和划水效率的关键是提高转髋的能力。

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Tube Shave is a next-generation shaving technology that delivers fast, one stroke efficiency for significantly better hair catching than foil shaving.

管剃须是下一代剃须技术，提供快速，一个明显优于铝箔头发剃追上中风的效率。

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So when I got my custom bike, I told Seven Cycles this and they built in an oversized seat tube to add rigidity for my standing pedal stroke, an efficiency increase.

FORBES: Why You Need a Custom Road Bike