永不生锈的螺丝钉

a "screw that never rusts" — sb who selflessly and wholeheartedly serves the Communist Party, like Lei Feng 雷鋒|雷锋[Lei2 Feng1], to whom the metaphor is attributed

never / will never

forever / always / perpetual

no; not so / (bound form) not; un-

to be born / to give birth / life / to grow / raw / uncooked / student

to rust / to grow rusty / to corrode / oxidization

to corrode / to rust

see 的士[di1 shi4]

really and truly

of; ~'s (possessive particle) / (used after an attribute) / (used to form a nominal expression) / (used at the end of a declarative sentence for emphasis) / also pr. [di4] or [di5] in poetry and songs

(bound form) bull's-eye; target

screw

spiral shell / snail / conch

screw

silk / thread / trace / (cuisine) shreds or julienne strips / CL:條|条[tiao2] / classifier: a thread (of cloud, smoke etc), a bit, an iota, a hint (of sth) etc

nail / to follow closely / to keep at sb (to do sth) / variant of 盯[ding1]

to join things together by fixing them in place at one or more points / to nail / to pin / to staple / to sew on