蛙泳

In the flat stroke, the emphasis of the arm pull (meaning the point during an arm cycle when the hands are moving fastest and with the most power) occurs at the beginning of the arm pull―during the outsweep.

在水平式蛙泳中，两臂划水的重点（其含义是在臂部划水循环中双手动作最快和用力最大的点）发生在臂部划水的开始──在向外划水阶段。

For breaststroke-specific reasons, the front scull will show you the exact movement your hands should do during the outsweep of the pull.

就蛙泳来说，前方浆式划水动作就是手部向外划水产生推进力时的正确动作。

I'm good at freestyle and breast s troke.

我擅长自由泳和蛙泳。

I good t te bret troke.

我最擅长的就是蛙泳。

Kids are really unpredicable. Sometimes, you were amazed to see her progress.

我目前的情况，蛙泳100m大概在1分50左右，刚开始学习自由泳。

Such illegalities may occur in breaststroke and underwater dolpining that may exceed allowable lengths.

类似的犯规行为可能出现在蛙泳比赛中，或者运动员在水下的动作超过了规定的要求。

And finally in lesson four you will learn to combine butterfly and breaststroke in ways that will help you flow through the water in either stroke with ease and grace that few simmers ever attained.

最后，也就是第四课，将学习蝶泳结合蛙泳的多种方法，这将使你用任意泳姿都会得心应手，这也是多数游泳者难以企及的梦想。

When I swim fast breast stroke, I try to picture that I can almost dig into a cross position with body flat on the water and my arms are a 180 degree.

当我快游蛙泳时，我都尝试着使身体呈十字姿态：身体平躺在水中，手臂展开180度。

When I swim fast breast stroke, I try to picture that I can almost dig into a cross position with body flat on the water and my arms are a 180 degree.

当我快速蛙泳时，我总是能展现一个十字姿态：身躯平躺在水中，手臂展开180度。

Streamline, and begin your dolphin kick or your breaststroke pullout right before you begin to lose any speed from your push-off.

流线体位，并在身体开始减缓蹬壁加速速度之前开始打蝶泳腿或者开始做蛙泳的大划臂动作（breaststroke pull-off）。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。