名詞 offspring:

1. the immediate descendants of a person
   同義詞：progeny, issue
2. something that comes into existence as a result
   同義詞：materialization, materialisation
3. any immature animal
   同義詞：young

1. The atom bomb is the offspring of the 20th century physics.
   原子彈是20世紀(jì)物理學(xué)的產(chǎn)物。
2. How do parents pass genes on to their offspring?
   父母是怎樣把基因遺傳給自己的子女的？

off.spring

n.（名詞）
【復(fù)數(shù)】 offspring
The progeny or descendants of a person, an animal, or a plant considered as a group.
后代：人、動(dòng)物或植物的子孫或后代（總稱(chēng)）
A child of particular parentage.
特殊身世的孩子
A result; a product.
結(jié)果；產(chǎn)物

來(lái)源：
Middle English ofspring
中古英語(yǔ) ofspring
from Old English
源自 古英語(yǔ)
of [off] * see off
of [離開(kāi)] *參見(jiàn) off
springan [to rise]
springan [發(fā)源]