她完全是出于自愿报名参加慈善跑的，没有任何人劝她。
She signed up for the charity run entirely of her own volition, with no one persuading her.
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解释
形容完全出于个人自由意志做出的选择。
She signed up for the charity run entirely of her own volition, with no one persuading her.
形容完全出于个人自由意志做出的选择。