老年人像取圣餐饼般拿起一颗烘香的棉花糖，眼睛为之一亮。
The older people take a toasted marshmallow like it's communion bread, and their eyes light up.
当我拿出我设计制作的三维纸板模型的时候，他们的眼睛为之一亮。
When I held up the 3D cardboard model I had made, their eyes lit up.
适当留心一下结构，一篇短小的文章结构上很有特色也会让老师眼睛为之一亮的。
Take care a structure appropriately, there is characteristic to also can let teacher eye be one of light very much on a smallish text structure.
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