to be the apple of someone's eye = to be loved by someone, normally an older relative: "She's the apple of her father's eye."

奉若掌上明珠（被某人深爱，通常是一位年长的亲人）：“她是父亲的掌上明珠。”

youdao

J., which has developed a system to notify families if loved ones haven't taken their medicine, are looking for a piece of the market of families with an aging relative.

考虑到这一点，一大批公司，大到通用电气，小到iReminder这样的初创公司(它已经研究出一套可告知家人是否吃药的系统)都开始在老年人家庭这方面寻找市场。

youdao

J., which has developed a system to notify families if loved ones haven't taken their medicine, are looking for a piece of the market of families with an aging relative.

考虑到这一点，一大批公司，大到通用电气，小到iReminder这样的初创公司(它已经研究出一套可告知家人是否吃药的系统)都开始在老年人家庭这方面寻找市场。

youdao