白岩松称保质期过了并不代表不能吃，能否增设「安全食用期」来减少食品误扔的浪费？在执行上有哪些难点？

(used after an attribute when it modifies a noun)

expiration date

(modal particle intensifying preceding clause)

(bound form) having; with; -ful; -ed; -al (as in 有意[you3 yi4] intentional)

(adjective) this

to approach; to move towards

we; us; ourselves; our

to live

concept

length of time

also; too; as well; (not ...) either

representative

now; at present; currently

edible

but; however

foodstuff; food; provisions

to waste