狗的项圈上系着一个小的金属圆片。

The dog had a small, metal ___disc attached to its collar.

我在阁楼里发现了一张旧的乙烯基唱片。

I found an old vinyl ___disc in the attic.

满月在夜空中显现为一个明亮的圆盘。

The full moon appeared as a bright ___disc in the night sky.