The bear pauses on a patch of rockweed algae to sniff the air.
黑熊在一块长满岩藻的砾石上驻足，嗅着空气中的气味。
It just takes one or two to sniff the air and decide the time is right to leave.
只需嗅一两下空气就决定现在是离开的时候了。
Sniff the air in anticipation of mom's pumpkin pie. Then on the big day, enjoy your holiday feast, and all the benefits that come from the power of nostalgia.
渴望牡蛎馅，嗅嗅期盼已久的妈妈的南瓜派，然后在这个大日子里，好好享受你的假期筵席，所有的一切都得益于怀旧之情的力量。
When I moved into my apartment three years ago, the first thing I did after I tipped the movers was sit down on a box, crack open my laptop and sniff the air for wi-fi signals.
我是三年前搬进我的公寓的。付完小费打发走搬运工人以后我所做的第一件事就是：在箱子上坐下，打开我的笔记本，嗅探空气中的Wi-Fi信号。
Still widely used, this electronic nose is able to sniff out a few parts per trillion of chemicals found in the soil, water or air.
这种仪器直至今天仍然广泛使用，它可以从土壤、水或空气中发现的数以万计的化学物中嗅到一部分（需要的）的东西。
To test the technology, he has graduate students sniff samples of smelly air from plastic bags.
为了测试这一技术，他要求研究生去闻胶袋中的臭气样本。
"When I really miss Beijing I will open a can and sniff it, " Mr Zhang, 26, said. "I love this city and the air quality is getting better. "
26岁的张先生说：“在我特别想念北京的时候，我就会打开一罐闻闻。我爱这座城市，它的空气质量正在改善。”
But in the moist East Asian air the ground-up leaves went bad before you could sniff it up your nose.
然而在东亚潮湿的空气中，鼻烟还没等到被人们吸进鼻子就已经腐坏变质了。
But in the moist East Asian air the ground-up leaves went bad before you could sniff it up your nose.
然而在东亚潮湿的空气中，鼻烟还没等到被人们吸进鼻子就已经腐坏变质了。
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