He told her, not a single day in his childhood, he had been happy.

他在告诉她，没有一个单一的一天在他的童年，他过的幸福。

Becoming more acutely aware of how precious all the time you have with your older family members is, and how not a single day with them is guaranteed.

越来越强烈意识到：和年长的亲人在一起的时光太宝贵，说不定哪一天他们就不在了。

From the day you arrive at my house, you need not spend a single penny.

从你到我家的那一天起，你就分文不需花了。

He would have to make sure, for example, that his clothes did not accumulate a single extra speck of dust that was not there one day earlier.

比如，他的衣服上不能多出一片之前一天没有的灰尘。

Television is the only technology that can reach so many people in a single day. But others are not far behind.

唯一能在一天之内让如此多的人了解某件事情的技术就是电视，然而其他媒介也不是落得太远。