The idea is you gather in a tight circle, throw snowballs straight up and bend forward. Almost everybody gets hit, but since nobody knows by whom, there is no anger or retaliation.

大家围成一个紧密的圆圈，先向上投掷雪球然后弯下身子，差不多每个人都被雪球击中了，但是没有人知道自己是被谁投出的雪球击中的，所以既没有恼怒也无法报复。

youdao

She may never remember this house. But I bet she’ll remember the day her dad spent running up and down the street holding on tight while she rode without training wheels.

或许，女儿会忘记我们的房子，但我相信她不会忘记那天，她的父亲紧紧地扶着她，在她还不能熟练地骑车的时候，陪着她在那条路上往返奔跑。

youdao

She curled up in a tight ball, with her knees tucked up at her chin.

她蜷缩成紧紧的一团，膝盖顶着下巴。

《柯林斯英汉双解大词典》

Here is Stevie Wonder with his nineteen sixty-five hit single "Up-Tight (Everything's Alright)."

VOA: special.2009.10.19

The Sohn conference is a little surreal for a first-time attendee, a rock concert for amped-up guys in tight-fitting suits.

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Yapp went to loose-head, with Paul James shifting across the front row to take up the tight-head role.

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