a.

1. 敏感的；易受伤害的[（+to）]
   Donna is sensitive to strong smells.

   唐娜对强烈的气味很敏感。

2. 神经过敏的；易怒的[（+to/about）]
   He is sensitive about his failure.

   人家一提他的失败他就生气。

3. 灵敏的，灵敏度高的
   We didn't have a receiver sensitive enough to pick up the signal.

   我们的接收器不够灵敏，未能收到这个信号。

4. 感光的
   I need some sensitive paper.

   我需要一些感光纸。

5. 要审慎处理的；机密的
   The conference debated the sensitive issue of race relations.

   会议辩论了敏感的种族关系问题。

6. 易波动的，易受影响的[（+to）]
   The cost is not sensitive to the batch size.

   价格不随批量大小波动。

7. 【医】过敏的
   The child is sensitive to eggs.

   那孩子对鸡蛋过敏。

adj.

1. quick to detect, respond to, or be affected by slight changes, signals, or influences.
   ▸(of photographic materials) responding rapidly to the action of light.
2. having or showing a quick and delicate appreciation of the feelings of others.
3. easily offended or upset.
4. kept secret or with restrictions on disclosure to avoid endangering national security.

n.