核心畫面
One picture holds this word together: a body carrying a child and then bringing that child out. Bear means to carry and to bring forth, so childbearing takes the whole stretch — the months of pregnancy and the birth at the end — and packs it into one noun. That is why the word feels like a chapter of a life rather than a day on a calendar.
childbearing 的畫面可以想成：一個身體把孩子懷在身上，然後把他帶到世界上。bear 同時有「承載」和「生…更多收起
childbearing 的畫面可以想成：一個身體把孩子懷在身上，然後把他帶到世界上。bear 同時有「承載」和「生下」兩層意思，所以這個字把懷孕的那幾個月和最後的生產，整段收進同一個名詞裡。也因為這樣，它讀起來像人生的一個階段，而不是行事曆上的某一天。From the word’s history
Middle English childberyng, formed simply from child plus bearing; the sense of carrying and bringing forth is already inside bear.
中古英語寫作 childberyng，就是 child 加 bearing 拼起來；「承載並帶出來」這層意思本來就在 bear 裡面。
Wiktionary entry for childbearing supplied in this packet (source_ref kaikki:3f6f69a190036ae4:1397344414)