pregnant

Compared meaning: large in degree or amount (adjective).

比较义项：程度大、数量多（形容词）。

• great

  Describes something as large in scale, extent, or intensity in a general, often emphatic way; very common in casual speech and collocates with time, distance, amount, deal.

  泛指规模、程度或强度上的巨大，语气较为强调，常用于口语，常与 time、distance、amount、deal 等词搭配。

  There was a great distance between the two villages.

  这两个村庄之间有很大的距离。

• heavy

  Describes an amount, quantity, or intensity as greater than usual or expected; typical of rain, traffic, losses, drinking, not of size or scale in general.

  描述数量、程度或强度超出通常水平，多用于雨量、交通、损失、饮酒等，而不用于泛指规模或体积。

  Heavy traffic delayed her flight by almost two hours.

  拥堵的交通使她的航班延误了将近两个小时。

• pregnant 本词

  Refers specifically to a woman carrying an unborn baby; a precise physical condition, not a general degree word, and cannot describe amount, size, or intensity of other things.

  特指女性怀有未出生的婴儿，是一种具体的生理状态，而非泛指程度的词，不能用来形容其他事物的数量、规模或强度。

  She stayed home from work because she was seven months pregnant.

  她因为已经怀孕七个月而请假在家。

Great, heavy, and pregnant can all mean 'to a large degree'. Great is general and emphatic, for size, distance, or amount. Heavy means an amount or intensity greater than usual, as in heavy rain or traffic. Pregnant means 'carrying a baby', not a degree word.

三个词都能表示某种事物“程度大”，但侧重不同：great 侧重规模或程度的宏大，heavy 侧重数量、重量或强度的大，pregnant 特指“怀孕的”这一具体生理状态，与前两者的相似性仅在于都可修饰名词表示某种“显著程度”。这里不比较 great 的“伟大的、杰出的”这一常用义，也不比较 heavy 的“重的（物理重量）”这一本义，也不比较 pregnant 的“意味深长的（如 pregnant pause）”这一引申义。