vanishingly

be vanishingly rare 瀕臨滅絕

are now vanishingly rare 多數都已然瀕危 ^[1] 

The gene is vanishingly rare in humans, found in less than 3% of people.這個基因在人類中極及罕見，只有不到3%的攜帶人羣。

The trouble is that, while cells within cells are common in eukaryotes, which often engulf other cells, they're vanishingly rare in more rigid bacteria.問題是，雖然胞內同生在真核生物中非常常見，這往往造成吞噬其他細胞，但是在較為硬質的細菌難以察覺。

On one estimate, almost a third of its work concerns alleged human-rights violations, which made up a vanishingly small percentage of the law lords’ caseload a decade ago.據估計，侵害人權的指控佔幾乎他們工作的三分之一，而在二十多年前這在法官們的待處理案件中只是可以忽略不計的部分。 ^[1]