1.drift v.漂流，漂移(to cause to be driven in a current)；（價格等）緩慢變動(to vary or deviate from a set course or adjustment)

聯想記憶：在大峽谷(rift)漂流(drift)

例：We watched the leaves drift downstream.//Consumers recognize that the quality of products sold under invariant brand names can drift over time.

2.drining n．鉆孔(an action to make a hole with a drill)；訓練，演練(exercise, training)

詞根記憶：來自drill(v.訓練；鉆孔)

例：Jackson likened the questions about drilling risk to those about the link between smoking and lung cancer.

3.drizzle n．細雨(a fine misty rain)；細流(streamlet)

例：adrizzle from the faucet水龍頭里流出的一股小水流

4.droplet n.小滴，微滴(a tiny drop)

聯想記憶：drop(滴)+Iet（允許）--允許滴下來的--小滴

例：Warmed by the Sun, ocean water evaporates, rises high into the atmosphere, and condenses in tiny droplets on minute particles of dust to form clouds.

5.dropout n.<美>中途退學（的學生）( one who drops out of school)

詞根記憶：來自詞組drop out（中途退學）

例：The school dropout rate declined immediately after the adoption of interactive computer instruction.

6.drought n．干旱，旱災(a period of dryness especially when prolonged)

聯想記憶：dr(看作dry)+ought(應該)--應該干--干旱

7.dubious a．可疑的(doubtful);不確定的(giving rise to uncertainty)

詞根記憶：du(=)+bious一有兩種想法一不確定的

例：The manager decided not to hire the dubious applicant.//The result is still dubious.

8.ductile a．易變形的(easily led or influenced)；可塑的(plastic)

詞根記憶：duct(引導)+ile--可引導的--可塑的

例：The descending rock is less ductile and much more liable to fracture.

9.dump v.傾倒（to release or throw down inalarge mass）；傾銷(to sell in quantity at a very low price; specifically to sell abroad at less than the market price at home);n.堆存處(a place where materials are stored)

發(fā)音記憶：“當鋪”一到當鋪去傾銷

例：Residents were not allowed to dump their trash in the parklands.// Many companies charge that foreign companies dumped their products at less than fair value.

派生詞：dumping(n.傾銷)

10.dumpster n.垃圾桶 (used for a large trash receptacle)

例：Residents deposit recyclable trash in municipal dumpsters located in the parking lot.