私はこの子供達を守るのが私の義務だと信じる。

Sentence Analyzer

この 子供達 守る 義務 信じる

English Translation

I believe it my duty to protect these children.

Furigana

(わたし)はこの子供達(こどもたち)(まも)るのが(わたし)義務(ぎむ)だと(しん)じる。

Romanji

Watashi wa kono kodomotachi o mamoru no ga watashi no gimu da to shinjiru.

Words

(わたし、わたくし)
I; me; private affairs; personal matter; secrecy; selfishness
()
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
此の (この)
this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)
子供達 (こどもたち)
children
()
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.
守る (まもる)
to protect; to guard; to defend; to keep (i.e. a promise); to abide (by the rules); to observe; to obey; to follow
()
indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question
()
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
義務 (ぎむ)
duty; obligation; responsibility
()
be; is; indicates past or completed action; indicates light imperative
()
if; when; and; with; particle used for quoting (with speech, thoughts, etc.); quoting particle; promoted pawn; indicates question (sentence end)
信じる (しんじる)
to believe; to believe in; to place trust in; to confide in; to have faith in

Kanji

Readings: シ、 わたくし、 わたし
Meanings: private, I, me
Readings: シ、 ス、 ツ、 こ、 -こ、 ね
Meanings: child, sign of the rat, 11PM-1AM, first sign of Chinese zodiac
Readings: キョウ、 ク、 クウ、 グ、 そな.える、 とも、 -ども
Meanings: submit, offer, present, serve (meal), accompany
Readings: タツ、 ダ、 -たち
Meanings: accomplished, reach, arrive, attain
Readings: シュ、 ス、 まも.る、 まも.り、 もり、 -もり、 かみ
Meanings: guard, protect, defend, obey
Reading: 
Meanings: righteousness, justice, morality, honor, loyalty, meaning
Readings: ム、 つと.める
Meanings: task, duties
Reading: シン
Meanings: faith, truth, fidelity, trust