The dedicated effort or significant contribution involved in raising, nurturing, and protecting a child, often implying a caregiver's long-term service and devotion.
小明从小父母双亡，多亏王阿姨十几年如一日的阿保之劳，他才能健康成长，顺利完成学业。
Xiao Ming lost his parents at a young age. It was thanks to Aunt Wang's steadfast dedication and nurturing efforts over more than a decade that he was able to grow up healthy and successfully complete his studies.
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