n.

1. 荫；阴暗处[U][the P]
   Sometimes she sits alone in the shadow.

   有时候她独自一人坐在幽暗处。

2. 影子[C]
   Lunar eclipse occurs when the earth's shadow falls on the moon.

   地球的影子落在月球上时，就发生月蚀。

3. （画等的）阴影部分；（眼睛底下的）黑眼圈[C]
4. 幻影，幻像[C]
5. 征兆，阴影[C]
   The scandal cast a shadow on his career.

   这件丑闻给他的事业投上了一层阴影。

6. 形影不离的人；尾随者[C]
   My twin brother is my shadow every minute.

   我的孪生兄弟与我形影不离。

7. 阴魂，幽灵[C]
8. 极相似的人（或物）[C]
9. （用于否定句或疑问句）微量，少许[the S][（+of）]
   There is not a shadow of doubt that the boy broke the window.

   毫无疑问窗子是那个男孩打破的。

10. 隐退；掩蔽，庇护[U]
11. 阴郁，忧愁；愁容[C][U]

vt.

1. 投阴影于
2. 遮蔽，使变暗；使阴郁
   A broad hat shadowed her face.

   一顶宽边帽遮住了她的脸。

3. 盯梢，尾随
   The police have been shadowing him for months.

   警方已秘密跟踪他几个月了。

4. 模糊地表示；预示[（+forth/out）]

vi.

1. 渐变
2. 变阴暗，变朦胧；变阴郁
   His eyes shadowed with grief.

   他的眼睛因悲痛而黯然。

a.[Z][B]

1. （似）影子内阁的
   Shadow Minister of Defence

   影子内阁的国防部长

2. 非官方的；非正式的

n.

1. a dark area or shape produced by a body coming between light rays and a surface.
   ▸partial or complete darkness.
   ▸a dark patch or area.
2. an air or expression of sadness and gloom.
3. a position of relative inferiority or obscurity.
4. [with neg.] the slightest trace.
5. a weak or inferior remnant or version of something.
6. an inseparable attendant or companion.
   ▸a person secretly following and observing another.
7. [as modifier] Brit. denoting the opposition counterpart of a government minister.

v.

1. envelop in shadow; cast a shadow over.
2. follow and observe secretly.
   ▸accompany (a worker) in their daily activities for experience of or insight into a job.