a.

1. 稳固的；牢固的；结实的
   I don't think the chair is firm enough to stand on.

   我觉得这椅子不够稳固，不能站人。

2. 坚定的，坚决的；坚挺的
   My brother has a firm belief in the value of cold baths.

   我的兄弟坚信洗冷水澡有益健康。

3. 坚实的

ad.

1. 稳固地；牢固地
   She holds firm to her belief in God.

   她坚信上帝的存在。

vt.

1. 使稳固；使牢固[（+up）]
2. 使确定下来[（+up）]
   We'll firm up the plan soon.

   我们不久就要将这一方案确定下来。

vi.

1. 变牢固；变坚实
   The market is firming.

   行情正在回升。

n.[C]

1. 商号，商行，公司
   He has set up a firm of his own.

   他自己开了一家公司。

adj.

1. having an unyielding surface or structure.
2. solidly in place and stable.
3. having steady power or strength:
   a firm grip.
   ▸unlikely to change; enduring.
4. showing strength of character; resolute.
5. (of a currency, shares, etc.) having a steady value or price which is more likely to rise than fall.

v.

1. make stable or unyielding.
2. (often firm something up) make (an agreement or plan) explicit and definite.
3. (of a price) rise to reach a level considered secure.

adv.

n.

1. a company or business partnership.
2. a group of hospital doctors working as a team.