When offered anything unusual to eat, a pig will sniff at it and nibble gently.

当提供不同以往的食物时，猪会嗅，并轻轻地啃。

She didn't get even a sniff at a medal.

她根本不可能拿到奖牌。

We should take a sniff at everything and distinguish the good from the bad.

我们对任何东西都要用鼻子嗅一嗅， 鉴别其好坏。

You shouldn't sniff at that offer.

你不该对那项提议嗤之以鼻。

Don't sniff at his effort.

不要看不起他的努力。