It's like we've gone back to the baby stage.

他就像回到了婴儿阶段。

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And the companies in growing stage have more heterogeneity than the companies in baby stage or mature stage.

成长期企业捐赠资源的异质性要高于初创期、成熟期企业。

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Don't worry about the baby not wanting to leave you—it's a stage they go through.

宝宝不肯离开你别担心，他们总要经过这个阶段。

《牛津词典》

You show the baby, say a six-month-old, a stage with a block on it.

将一个木块放在平台上,然后让一个六个月大的婴儿来观看

耶鲁公开课 - 心理学导论课程节选

Let your partner handle things for a while, and remember, it's not the end of the world if he or she puts the diaper on wrong or feeds the baby Stage 2 food instead of Stage 3, she said.

CNN: Mothers on what you don't expect when you're expecting

He said the study showed the effect on the baby depended on the stage of pregnancy the woman was at when she experienced the stressful event.

BBC: NEWS | Health | Babies inherit 9/11 mums' stress

He says his work has been able to show for the first time that the unborn baby engages in complex behaviour from an early stage of its development.

BBC: NEWS | Health | Scans uncover secrets of the womb