我试了好几副耳机，就这副戴着最舒服。
I've tried several pairs of headphones, and this one fits the most comfortably.
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This英 /ðɪs/|美 /ðɪs/
one英 /wʌn/|美 /wʌn/
解释
this one 替代前文提到的 headphones。one 作为替代代词指代同类事物中的特定个体，避免重复 headphones。
I've tried several pairs of headphones, and this one fits the most comfortably.
this one 替代前文提到的 headphones。one 作为替代代词指代同类事物中的特定个体，避免重复 headphones。