a.

1. 冷的，寒冷的
   It was bitterly cold that night.

   那个夜晚，天气十分寒冷。

2. 冷淡的，不友善的；冷酷的
   The selfish old miser had a cold nature.

   这个自私的老吝啬鬼生性冷酷。

3. （食物）未热过的；热过后变凉的；冰冻的
   Would you like a cold drink?

   你要不要喝杯冷饮？

4. （尤指儿童游戏中）距离目标（或答案）还远的；远未猜中的[F]
   --"Is she an actress?" --"No, you're getting colder."

   —“她是演员？” —“不是，你远没有猜对。”

5. 【口】昏倒的，不省人事的[F]
   The boxer was knocked out cold.

   这位拳击手被击倒在地不省人事。

6. 令人泄气的；使人战栗的
   He was rather slow to realize the cold truth.

   他迟迟才认识到这冷酷的事实。

n.

1. 寒冷[U]
   He was shivering with cold.

   他冷得发抖。

2. 伤风，感冒[C][U]
   I have got a cold recently.

   近来我感冒了。

ad.

1. 完全地，彻底地
   Joseph knew the business cold.

   约瑟芬对此事了如指掌。

adj.

1. of or at a low or relatively low temperature.
2. lacking affection or warmth of feeling; unemotional.
   ▸not affected by emotion; objective.
3. (of a colour) containing pale blue or grey and giving no impression of warmth.
4. (of a scent or trail) no longer fresh and easy to follow:
   the trail went cold.
   ▸(in children's games) far from finding or guessing what is sought.
5. without preparation or rehearsal.
6. informal unconscious:
   she was out cold.

n.

1. a low temperature; cold weather; a cold environment.
2. a common infection in which the mucous membrane of the nose and throat becomes inflamed, causing running at the nose and sneezing.