【英语时差8,16】人类嗅觉的奥秘（下）

 Since most of the smell receptors are located very high up, near the brain, they are out of the main flow of air. As a result, the smell receptors don’t get a strong dose of whatever’s in the air you’re breathing. But when you sniff¹ — that is, when you take a short, sharp inhalation, you create turbulence² inside your nasal cavity that disrupts the main flow of air and sends more of the air into the out-of-the-way parts of the nasal cavity, including the part where the smell receptors are located. With more air passing by the smell receptors, your sense of smell becomes more perceptive³ of faint odors. You don’t sniff at strong, pungent⁴ smells because a little whiff is enough, and too much could even be harmful. But sniffing⁵ is the body’s way of getting a stronger dose of a weaker scent⁶.

1 sniff   

vi.嗅…味道；抽鼻涕；对嗤之以鼻，蔑视

参考例句：

• The police used dogs to sniff out the criminals in their hiding - place.警察使用警犬查出了罪犯的藏身地点。
• When Munchie meets a dog on the beach, they sniff each other for a while.当麦奇在海滩上碰到另一条狗的时候，他们会彼此嗅一会儿。

2 turbulence   

n.喧嚣，狂暴，骚乱，湍流

参考例句：

• The turbulence caused the plane to turn over.空气的激流导致飞机翻转。
• The world advances amidst turbulence.世界在动荡中前进。

3 perceptive   

adj.知觉的，有洞察力的，感知的

参考例句：

• This is a very perceptive assessment of the situation.这是一个对该情况的极富洞察力的评价。
• He is very perceptive and nothing can be hidden from him.他耳聪目明，什么事都很难瞒住他。

4 pungent   

adj.（气味、味道）刺激性的，辛辣的；尖锐的

参考例句：

• The article is written in a pungent style.文章写得泼辣。
• Its pungent smell can choke terrorists and force them out of their hideouts.它的刺激性气味会令恐怖分子窒息，迫使他们从藏身地点逃脱出来。

5 sniffing   

n.探查法v.以鼻吸气，嗅，闻( sniff的现在分词 )；抽鼻子（尤指哭泣、患感冒等时出声地用鼻子吸气）；抱怨，不以为然地说

参考例句：

• We all had colds and couldn't stop sniffing and sneezing. 我们都感冒了，一个劲地抽鼻子，打喷嚏。
• They all had colds and were sniffing and sneezing. 他们都伤风了，呼呼喘气而且打喷嚏。 来自《现代英汉综合大词典》

6 scent   

n.气味，香味，香水，线索，嗅觉；v.嗅，发觉

参考例句：

• The air was filled with the scent of lilac.空气中弥漫着丁香花的芬芳。
• The flowers give off a heady scent at night.这些花晚上散发出醉人的芳香。