生命を軽んじてはいけません。

life; existence

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

light (i.e. not heavy); feeling light (i.e. offering little resistance, moving easily); light (i.e. of foot); nimble; agile; non-serious; minor; unimportant; trivial; slight; small; gentle; soft; easy; simple; indiscriminate

yes; yeah; uh huh; negative verb ending used in informal speech (abbr. of negative verb ending "nu"); abbr. of particle "no"; abbr. of particle "ni" (used especially when it precedes the verb "naru")

hour; o'clock; (specified) time; when ...; during ...

if ... then; when; and; why don't you...?; the more (one does something); because; since