"Bang bang" sounded a knock on the door, a beloved boy, and his father into the house, a three sitting at the table.

“砰砰砰”，响起了敲门声，一个心爱的男孩，还有他的父亲进了屋，一家三口围坐在桌子边。

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If he had to go to the bathroom he would have to bang on the door until someone let him out.

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One night there was a big bang on the door.

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The Jagiellonian University is marking its 600th anniversary next year by opening the first buildings on a new campus, to include a centre for molecular biology and a technology park, bang next door to the Papal Theological Institute.

ECONOMIST: Polish education