他需要一支钢笔
He needs a pen
以上为机器翻译结果，长、整句建议使用 人工翻译 。
那个微笑的男孩需要一支他妈妈买的钢笔。
The smiling boy needs a pen bought by his mother.
youdao
Thee smiling boy needs a pen bought by his mother.
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