她摸到自己的乳房上有一个肿块。

She could feel a lump in her breast.

《牛津词典》

乳房自检对早期癌症的发现很有价值。

Breast self-examination is invaluable for detecting cancer in its very early stages.

《柯林斯英汉双解大词典》

无乳突痛（乳房疼痛或压痛）出现在约20%有排卵问题的妇女中。

Absence of mastodynia (breast pain or tenderness) occurs in about 20% of women with ovulatory problems.

youdao

Whenever I tried to sleep I would see huge, wobbly, white bags, like the full udders of cows, suspended from the ceiling above me.

每次我即将入睡,总会看到白色的大袋子摇晃着，如同母牛涨涨的乳房从房顶垂下来。

耶鲁公开课 - 1945年后的美国小说课程节选

So the threat embodied by the mother who will beat her own son unconscious is embodied in that fevered vision of the bags like the full udders of cows.

那个可怕的母亲,如同高烧时,看到的像涨涨的,母牛乳房的袋子。

耶鲁公开课 - 1945年后的美国小说课程节选

Those breasts are flat and fallen now ] speaking to her of her body]; Live in a heavenly mansion, Not in some foul sty."

你乳房已经平而扁,和她谈她的身体;,快住进天国的大厦吧，别再呆在臭猪圈，“

耶鲁公开课 - 现代诗歌课程节选