Why did he always wear white shoes?

他为什么老是穿白色的鞋？

youdao

I wear red socks and I wear white shoes.

我穿着红色的袜子和白色的鞋子。

youdao

We had to wear white suits to protect against radiation, a full respirator mask, two pairs of gloves, and plastic booties over our shoes.

我们必须戴好呼吸面罩，穿上一套防辐射的白色防护服，戴上两副手套，还要在鞋子外面套上塑料靴。

youdao

Living out of the public eye in a small monastery within Vatican City, Benedict will wear a simple white robe, without the papal red cape, and will swap his red shoes for brown ones.

CNN: Big crowds gather for Benedict's final papal audience

Underneath, seven white shoe boxes were piled, presumably containing the various sizes of the red leather shoes that popes traditionally wear.

NPR: Cardinals Celebrate Mass Before Entering Conclave