cavernous

Compared meaning: empty or hollow inside (adjective).

比较义项：空心的，内部中空（形容词）。

• hollow

  Neutral and general: simply means there is an empty space inside something, regardless of size; used for trees, teeth, bones, balls, etc.

  中性且通用：只是说明某物内部有空的空间，不论大小；可用于树木、牙齿、骨头、球等。

  The chocolate egg was hollow, with nothing but air inside it.

  这个巧克力蛋是空心的，里面除了空气什么都没有。

• cavernous 本词

  Stronger and more vivid: describes a large, deep hollow space like a cave, often with an echo; used mainly for big rooms, halls or mouths, not small objects.

  语气更强、更生动：形容像洞穴一样又大又深的空间，常带有回声；主要用于大房间、大厅或口腔，不用于小物件。

  Her cavernous yawn revealed a mouth that seemed to swallow the room.

  她张开大嘴打了个哈欠，那嘴巴又深又空，仿佛要把整个房间吞下去。

Hollow and cavernous both describe something empty inside, but differ in strength. Hollow is neutral, meaning empty space inside something, used for trees, teeth, or balls. Cavernous is stronger, for large, deep, cave-like spaces, mainly big rooms or mouths. Not compared: hollow meaning insincere.

两个词都描述物体内部是空的，但 cavernous 语气更强，强调空间又大又深，常带有回声或幽暗的意味，多用来形容建筑内部或洞穴般的大空间；hollow 只是中性地说明内部是空的，任何大小的物体都能用。此处不比较 hollow 的另一义项“空洞的，不真诚的”（如 hollow promise）。