So only a small crowd, say, a grade school class taking a field-trip to the park, would have to gather around that bench before it became more likely than not that two people shared a birthday.

所以当一小群人——比方说在公园游玩的小学的一个班——聚集在长椅周围时，很可能就有两个人生日相同。

youdao

The small crowd starts to shuffle off and a prim pensioner bustles up expectantly only to be told she's too late.

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