1. 圆盘状物;圆盘形状
    A disc is a flat, circular shape or object.

    e.g. Most shredding machines are based on a revolving disc fitted with replaceable blades.
           大多数粉碎机都是基于一个装有可替换刀片的旋转圆盘来实现作业的。

2. 椎间盘
    A disc is one of the thin, circular pieces of cartilage which separates the bones in your back.

    e.g. I had slipped a disc and was frozen in a spasm of pain.
           我有一个椎间盘错位了，疼得我动弹不得。

3. 唱片
    A disc is a record that you play on a record player.

    e.g. This disc includes the piano sonata in C minor.
           这张唱片包括了 C小调的钢琴奏鸣曲。

4. see also: disk;compact disc;slipped disc