'During' in the Bible

I also {explored} {the effects of indulging my flesh} with wine. My mind guiding me with wisdom, {I investigated} folly so that I might discover what [is] good under heaven for {humans} to do {during the days of their lives}.

So I realized that there is {nothing better} for them than to {rejoice and enjoy themselves} during their lives.

Look! I have discovered what is good and fitting: to eat and to drink and {to enjoy} all [the fruit of] the toil with which one toils under the sun during the number of the days of his life that God gives to him--for this [is] his lot.

For who knows what [is] good for a man in his life during the few days of his fleeting life, which are fleeting as a shadow? For who can tell anyone what will happen {in the future} under the sun?

This [is] the {injustice} that is done under the sun: the same fate [comes] to everyone. Also the hearts of {humans} are full [of] evil; delusion [is] in their hearts during their lives, and then they die.