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backstroke turn indicator /ˈbakstɹəʊk ˈtɜːn ˈɪndɪkˌeɪtə/ n

中文：仰泳转身标志绳

中文 · 仰泳转身标志绳Español · indicador para viraje en nado de espaldaFrançais · repère de virage de dos
Meaning：Rope with pennants that is strung 5 m from the finish and turning walls; backstroke swimmers use it to judge distance.
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Competition swimming lanes

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