土地與身體：真的生出東西
這一組是字面上的「生」——土壤長出作物、生物生出下一代，都是實實在在有新的生命被帶出來。
fertile (productive soil) · adjective · C2
Land or soil that is able to produce good crops.
肥沃
核心畫面
One way to picture it: ground that gives birth — soil so rich that whatever you drop into it comes up alive and multiplied. The word is not about the seed's effort; it is about the ground's capacity to bring things forth.
一塊「會生東西的土」：你把種子丟下去，它自己就長得又多又好。重點不在種子多努力，而在這塊地本身有沒有那種「把東西生出…更多收起
一塊「會生東西的土」：你把種子丟下去，它自己就長得又多又好。重點不在種子多努力，而在這塊地本身有沒有那種「把東西生出來、養大」的能力。英文 fertile 的拉丁字根 ferō 就是「帶出、生出」的意思，所以整個字從頭到尾都在講同一件事——這裡有東西會冒出來。From the word’s history
From Latin fertilis 'fruitful', built on ferō 'to bear, to carry, to bring forth'. The modern senses all keep that idea of something producing and bringing forth.
來自拉丁文 fertilis（多產的），字根 ferō 是「帶出、生出」。這個「生出來」的動作一直留在現代用法裡：土地生作物、身體生後代、腦袋生想法、環境生出新局面——換的只是誰在生、生出什麼。
Wiktionary（fertile 詞源條目，見本題提供的 attested origins）
Two branches
腦袋與局勢：抽象的「長得出東西」
從真的土壤延伸出來的比喻用法：能力還是「會生出東西」，只是生出來的東西沒有形體。
fertile (imaginative mind) · adjective · C2
Used about a mind or imagination that can produce many interesting and unusual ideas.
豐富
原始詞典資料7 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
Fertilename
- 1
A city and township in Iowa.
- 2
A city in Minnesota.
fertileadj/ˈfɜːtaɪl/
- 1
Of land, etc.: capable of growing abundant crops; productive.
- Taking advantage of the river's fertile floodplain, residents of the town of Skardu cultivate apricot, apple, and peach orchards in the sandy soil.
- 2
Of one's imagination, etc.: active, productive, prolific.
- 3
biologynatural-sciencesCapable of reproducing; fecund, fruitful.
- Most women at the age of fifty are not fertile.
- 4
biologynatural-sciencesCapable of developing past the egg stage.
- 5
natural-sciencesphysical-sciencesphysicsNot itself fissile, but able to be converted into a fissile material by irradiation in a reactor.
- There are two basic fertile materials: uranium-238 and thorium-232.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。