仕事はおもしろい、が必ずしもやさしくはない。

The job is interesting, but not always easy.

仕事(しごと)はおもしろい、が必(かなら)ずしもやさしくはない。

Shigoto wa omoshiroi, ga kanarazushimo yasashiku wa nai.

仕事 (しごと)

work; job; business; occupation; employment; vocation; task; work

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

面白い (おもしろい)

interesting; amusing

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

必ずしも (かならずしも)

not always; not necessarily; not all; not entirely

易しい (やさしい)

easy; plain; simple

ない (ない)

not; emphatic suffix

Readings: シ、ジ、つか.える

Meanings: attend, doing, official, serve

Readings: ジ、ズ、こと、つか.う、つか.える

Meanings: matter, thing, fact, business, reason, possibly

Readings: ヒツ、かなら.ず

Meanings: invariably, certain, inevitable