So, the action of extending the leg backward creates a forward and upward movement (the flight phase).
因此，腿向后伸展的作用力，产生一个向前向上的运动(腾空阶段)。
"Dynamic Square" is a big waiting hall which forms a slope shape extending upward.
“活力广场”是一处大厅，同时也是等候厅。
"Dynamic Square" is a big waiting hall which forms a slope shape extending upward.
“活力广场”是一处大厅，同时也是等候厅。
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