1
in (one's/its) infancy
常用于描述事物处于早期发展状态。
The technology is still in its infancy.
这项技术仍处于起步阶段。
婴儿期；幼年
先理解核心含义，再看它在真实句子里的用法。
婴儿期；幼年
The period of life when a child is a baby; very early childhood.
The technology is still in its infancy.
这项技术仍处于起步阶段。
儿童期最早阶段(会爬但不会走)
The earliest period of childhood (crawling rather than walking).
生长或发展的早期阶段
the early stage of growth or development
婴儿状态；幼年
The state of being an infant.
最初的不成熟状态
the earliest state of immaturity
The technology is still in its infancy, so there are many problems to solve.
这项技术仍处于初期阶段，所以还有很多问题需要解决。
During her infancy, the baby learned to crawl before she could walk.
在她婴儿期，宝宝在会走路之前先学会了爬。
The new research field is in its infancy, but it promises great advances.
这个新的研究领域还处于萌芽阶段，但前景广阔。
常用于描述事物处于早期发展状态。
The technology is still in its infancy.
这项技术仍处于起步阶段。
She has been learning English from infancy.
她从婴儿时期就开始学习英语。
They have known each other since infancy.
他们从婴儿时期就认识彼此。
Not this
He died in an infancy.
Use this
He died in infancy.
infancy是不可数名词，表示‘婴儿期；初期’，前面不加不定冠词an。错误将infancy当作可数名词使用。
Not this
The technology is still in infant.
Use this
The technology is still in its infancy.
infant是名词‘婴儿’，而infancy是名词‘婴儿期’。表示‘处于初期’应使用in its infancy，而非in infant。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
处于初期阶段
The technology is still in its infancy.
这项技术仍处于初期阶段。
婴儿早期
Regular checkups are important during early infancy.
婴儿早期的定期检查很重要。
在婴儿期
Bonding with parents during infancy is crucial.
在婴儿期与父母建立情感联结至关重要。
从婴儿时期起
She has played the piano from infancy.
她从婴儿时期就开始弹钢琴。
自婴儿期以来
They have been friends since infancy.
他们自婴儿期起就是朋友。
处于早期阶段
The technology is still in its infancy.
这项技术仍处于早期阶段。
我们仍处于互联网的婴儿期。
The project is still in its infancy.
该项目仍处于初期阶段。
Use infancy naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把“in”想象成“在里面”，婴儿在里面就是婴儿期，人生的初期阶段。
语域：formal 常见场景：child development、technology、business 通常用于正式或书面语境，多比喻事物发展的初期阶段，常见于科技、商业等领域。
常用 the infancy of ... 表示“某事物的早期阶段”，如 the infancy of the internet。
Dictionary facts from ECDICT, WIKTIONARY.