投掷标枪中，左腿在交叉步与最后用力的衔接中起到了引导、动和支撑的作用。
In the javelin throw, the left leg plays the roles of guiding, braking and sustaining in the join of cross steps and final force.
在标枪投掷技术中，左腿在交叉步及最后用力的衔接中起到引导、制动和支撑的作用。
This article probes into the left leg movement and its significance in the close link of cross steps and final force for the purpose of fully understanding the role of left leg in the javelin throw.
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