The following morning a white diagonal cross appeared in the blue sky.

次日早晨，在湛蓝的天空中出现了一个白色的斜十字。

youdao

A cross with equal arms and a diagonal cross, or saltire, were the most traditional heraldic forms.

两岸平等的武器和对角线交叉，或圣安德鲁十字，最传统的徽章形式。

youdao

The British Union Jack was designed to unify the diagonal crosses of Saint Patrick (Ireland) and Saint Andrew (Scotland) with the rectilinear cross of Saint George (England).

英国联盟杰克目的是要统一对角穿越的圣帕·特里克(爱尔兰)和圣安德鲁(苏格兰)与直线交叉的圣乔治(英格兰)。

youdao

"Fearful of the outcome, King Angus led prayers for deliverance and was rewarded by seeing a cloud formation of a white Saltire - the diagonal cross against which Saint Andrew had been martyred - against a clear blue sky, " writes Mr Reid.

BBC: Saltire