All inside corners must be rounded.

内部的角必须是圆形的。

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They made two gold rings and attached them to the other two corners of the breastpiece on the inside edge next to the ephod.

做两个金环，安在胸牌的两头，在以弗得里面的边上。

youdao

Soldiers could look around corners or inside buildings before launching an attack.

士兵可以在进攻开始之前绕过拐角，深入探测楼层内部。

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Birmingham had the best of the early exchanges with three corners inside 11 minutes, but went behind to a flowing Blackburn move.

BBC: CHOOSE A SPORT

Inverness started brightly, winning three corners inside the first six minutes.

BBC: St Mirren 2-0 Inverness CT

Or straight edged pieces that go inside the puzzle, fake corners, no corners, and so on.

FORBES: The World's Best Jigsaw Puzzles