ad.

1. 向下；向樓下
   A cup fell down to the ground.

   一個杯子掉到地上。

2. 在下面
   Down in the valley the fog still lingers.

   下面山谷裡仍然霧氣濛濛。

3. （坐）下，（躺）下；（嚥）下
   The child could not get the pill down.

   孩子吞不下藥片。

4. 向南方；在南方
   They go down to Florida every winter.

   他們每年冬天南下去佛羅里達。

5. 去市中心，去商業區
6. （記）下，（抄）下
7. （物價，地位等）下降；（境況）變差
   Prices have gone down.

   物價下跌了。

8. （程度，數量等）減少，減弱
   The train is slowing down.

   火車正在減速。

9. 從早期起，從祖先傳下
10. 立即付現
    You can pay $10 down and the rest later.

    你可現在付十元，其餘的以後再付。

11. 徹底地，完全

a.[Z]

1. 情緒低落，消沉[F]
   I've been feeling down since I lost my job.

   自從失去工作後，我的情緒一直處於低潮。

   Dick is feeling a bit down today.

   狄克今天有點情緒低落。

2. 下行的；向下的[B]
   The down escalator is not running today.

   今天下行的自動樓梯不開。

3. 落後（於對手）的[F]
4. 【口】已完成的[F]
5. （電腦）不在工作的[F]
6. （分期付款的）第一期的
   He made a down payment of $100,000 for the house.

   他買這房子第一期付款十萬元。

prep.

1. 往……下方；在……下方
   Their house is half-way down the hill.

   他們的房子座落在半山腰。

2. 在……盡頭；沿著
   Walk directly down the road and you'll get to the square.

   沿這條路一直走，你能到廣場。

3. 往……的下游；在……的下游
   They floated down the river.

   他們沿河向下游漂去。

4. 【英】【口】到，去

vt.

1. 擊倒；【美】打敗
   He downed his opponent in the first round.

   他在第一個回合中擊倒對手。

2. 喝下，吞下
   He downed the medicine at one swallow.

   他一口便把藥全吞下了。

n.[C]

1. 倒霉事；失敗
   He had his ups and downs.

   他有過得意之時，也有過倒霉之日。

2. 下降；蕭條
   The business cycle experienced a sudden down.

   商業週期經歷突然的蕭條。

3. 【口】怨恨；厭惡
   They have a down on Helen.

   他們怨恨海倫。

n.

1. 絨毛；柔毛；羽絨[U]
   The goose down quilts are on sale today in this store.

   今天這家商店裡的鵝絨被子減價。

n.

1. 【英】有草丘陵地[P]

adv.

1. towards or in a lower place or position.
   ▸to or at a place perceived as lower.
   ▸away from the north.
   ▸Brit. away from the capital or major city.
   ▸Brit. away from a university, especially Oxford or Cambridge.
2. to or at a lower level or value.
   ▸to a smaller amount or size, or a simpler or more basic state.
   ▸from an earlier to a later point in time or order.
3. in or into a weaker or worse position, mood, or condition.
   ▸(of a computer system) out of action.
4. so as to lie flush or flat.
5. in or into writing.
   ▸on or on to a list or record.
6. (with reference to partial payment of a sum of money) made initially or on the spot.
7. (of sailing) with the current or the wind.
   ▸(of a ship's helm) moved round to leeward.
8. American Football  (of the ball or a player in possession) not in play.

prep.

1. from a higher to a lower point of.
2. at a point further along the course of.
   ▸along the course or extent of.
3. throughout (a period of time).
4. informal at or to (a place).

adj.

1. directed or moving towards a lower place or position.
   ▸denoting trains travelling away from the main terminus.
2. unhappy.
3. (of a computer system) out of action.
4. US black slang supporting or going along with.
   ▸following the latest fashion.
5. Physics  denoting a flavour of quark having a charge of -¹⁄₃.

v.

1. knock or bring to the ground.
2. consume (a drink).
3. (of a golfer) sink (a putt).

n.

1. (downs) informal unwelcome events.
2. informal a period of unhappiness.
3. American Football  a chance for a team to advance the ball, ending when the ball carrier is tackled or the ball becomes out of play.

n.

1. soft, fine feathers forming the covering of a young bird or an insulating layer below the contour feathers of an adult bird, used for stuffing cushions and quilts.
2. fine, soft hair on a person's skin.
   ▸short, soft hairs on leaves, fruit, or seeds.

n.

[名]

1. ①下降；降低。
   가격을 다운시키다.

   降低價格。

2. ②（拳擊比賽中）擊倒。