那天约20人出席宴会，其中包括一些外国专家，这是我们部门举办的一个新年庆祝会。
About 20 people, including some international experts, attended the party, which was held by my department to celebrate New Year's Day.
那天约20人出席宴会，其中包括一些外国专家，这是我们部门举办的一个新年庆祝会。
About 20 people, including some international experts, attended the party, which was held by my department to celebrate New Year's Day.
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