嗅觉是五种感官之一。

___Smell is one of the five senses.

狗有非常灵敏的嗅觉。

Dogs have a very good sense of ___smell.

我祖母的视力可能不好，但她的嗅觉仍然非常敏锐。

My grandmother may have poor eyesight, but her sense of ___smell is still very sharp.