vt.

1. 嗅，闻
   He sniffed the green tea in the cup appreciably.

   他欣然闻了闻杯里的绿茶香味。

2. 用力吸；用鼻吸（毒品）
   He sniffed the fresh morning air.

   他吸进早晨的新鲜空气。

3. 发觉[（+out）]
   It's his job to sniff out abuses of power.

   他的职责就是查究滥用权力的行为。

4. 嗤之以鼻地说
   "I expected something rather nicer," she sniffed.

   “我指望的要好得多呢，”她轻蔑地说。

vi.

1. 嗅，闻[（+at）]
   The dog sniffed at the stranger.

   狗闻闻那个陌生人。

2. 抽鼻涕；鼻子发呼哧呼哧声
   The boy caught a cold and was sniffing.

   那男孩子得了感冒，呼吸起来鼻子呼哧呼哧的。

3. 冷淡对待，嗤之以鼻[（+at）]
   My roommate sniffed at my idea of becoming an artist.

   我的室友对我要当艺术家的想法嗤之以鼻。

4. 好奇地看
   Dick sniffed suspiciously around the office.

   迪克怀疑地在办公室里四处查看。

n.[C]

1. 嗅，闻；吸气声
   He cleared his nose with a loud sniff.

   他大声吸气清了清鼻子。

2. 气味
3. 嗤之以鼻

v.

1. draw air audibly through the nose.
2. (sniff around/round) informal investigate something covertly.
   ▸ (sniff something out) informal discover something by investigation.

n.

1. an act or sound of sniffing.
2. informal a hint or sign.