英[əʊvərɪg\'zɜ:ʃən]
美[oʊvərɪg\'zɜʃən]
The O stands for overexertion.
字母O的含义是“过度用力. ”
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Symptoms of overexertion are chest pains, severe breathlessness, dizziness, loss of muscle control and nausea.
训练过度的症状有胸口痛, 严重的气喘, 头昏眼花, 肌肉痉挛以及恶心反胃.
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