他在默默无闻的工作中度过了大半生。

He spent most of his life working in obscurity.

《牛津词典》

鼻子是闻的，我们用鼻子闻。

Noses are for smelling, and we smell with our noses.

youdao

男低音也许是在多年的劳累和默默无闻的劳动之后，才在那里绝迹的。

Bass may have perished there after years of wearisome and unknown labour.

youdao

He can't hear major elements of the soundscape: the truck horn behind him.

他对身旁的那些声音充耳不闻：,无论是在他身后鸣笛的卡车。

耶鲁公开课 - 1945年后的美国小说课程节选

Let's say that you know that a specific chewing gum makes your breath bad.

假设你知道有一种口香糖会让你有不好闻的口气。

I've been 课堂 - SpeakingMax英语口语达人

STUDENT: Good question. Sounds like a reasonable guess How in the world am I going to compare a string to a number?

学生：不可闻的声音：,很好的问题，听起来像一个很合理的猜测,我到底该怎么对一个字符串,和一个数字进行比较呢？

麻省理工公开课 - 计算机科学及编程导论课程节选