1.
The Research on Biomechanical Traits and Training Methods of the "Underwater Butterfly Kick";
“水下蝶泳打腿技术”的生物力学特征及发展途径相关问题的研究
2.
Elements of the butterfly include pull, breath, recovery, entry and dolphin kick.
蝶泳的泳姿动作要领包括：划水、呼吸、移臂、入水和海豚式打水。
3.
We often refer the butterfly kick as the body dolphin.
我们通常把蝶泳踢腿称作海豚泳。
4.
The most physically demanding stroke, the butterfly features the simultaneous overhead stroke of the arms combined with the dolphin kick.
对身体条件最苛求的泳姿，蝶泳的特色是两臂同时越过头顶结合海豚式打腿。
5.
Backstroke: A stroke in which the swimmer is on his or her back performing a flutter-kick and rotating the arms alternately backward.
仰泳：一种泳姿。即运动员仰卧水面，双腿浅打水，两臂轮流向后划水。
6.
Strength endurance training by using lower limb swimming kick swimmer training apparatus
游泳下肢打腿训练器对游泳运动员力量耐力训练效果的研究
7.
In freestyle, each arm is alternately brought over the top and then plunges into the water in front of the swimmer. At the same time, the legs perform a rapid kicking action.
自由泳时，双臂轮流出水，然后向前插入水中，与此同时，两腿迅速打水。
8.
The swimmer who had got a cramp in the leg beat about in the water, trying desperately not to drown.
那个游泳者腿部抽筋，在水中乱扑打，拼命挣扎以求免于溺死。
9.
Discuss the trend of alteration on the swimming kick technique and body position in the condition of the race speed.;
竞赛速度条件下游泳体位与打腿技术的变化趋势与评价
10.
butterfly, backstroke, breaststroke and freestyle.
蝶泳、仰泳、蛙泳和自由泳。
11.
major trudgen crawl
两侧上下打水和剪水相配合的爬泳姿式
12.
single major trudgen crawl
单侧上下打水和剪水相配合的爬泳姿势
13.
In individual medley events,the swimmer covers the four swimming styles in the following order:Butterfly,Backstroke,frogstroke,and freestyle.
在个人混合泳项目中,游泳运动员按下列顺序以4种游姿比赛:蝶泳、仰泳、蛙泳、自由泳．
14.
B: In individual event, competitors swim an equal distance of four strokes; the order is butterfly, backstroke, breaststroke and freestyle.
个人混合泳比赛时，运动员按下列顺序排列的4种姿势游相同的距离：蝶泳、泳、泳和自由泳。
15.
In individual event, competitors swim an equal distance of four strokes; the sequence is butterfly, backstroke, breaststroke, and free style.
个人混合泳比赛时，运动员按下列顺序从4种姿势游相同的距离:蝶泳、仰泳、蛙泳、自由泳。
16.
In individual event, competitors swim an equal distance of four strokes; the order is butterfly, backstroke, breaststroke and freestyle.
个人混合泳比赛时，运动员按下列顺序排列的4种姿势游相同的距离：蝶泳、仰泳、蛙泳和自由泳。
17.
The thrusting motion of the legs in swimming.
打水游泳时蹬脚的动作
18.
breast stroke, back stroke, butterfly stroke, and free stroke.
蛙泳、仰泳、蝶泳以及自由泳。