follow one’s nose 笔直走；凭直觉行事，靠嗅觉指引

【例句】
Oh, I don’t know just where I want to go. I follow my nose and see what happens.
哦，我没打算去什么地方，我只是随便走走看看。

On our trips we took with us, at various, our four children and their friends. They ranged in age from five to ten years. We followed no particular plan --- just our noses.
我们在几次旅行中分别带上我们的四个孩子和他们的朋友们。这些孩子的年龄在5至10岁之间。我们没有按照什么特定的计划只是随心所欲地到处逛逛。