彼らは子供のときからお互いに知っている。

Sentence Analyzer

彼ら 子供 とき から お互い 知っている

English Translation

They have known each other since their childhood.

Furigana

(かれ)らは子供(こども)のときからお(たが)いに()っている。

Romanji

Karera wa kodomo no toki kara otagai ni shitteiru.

Words

彼ら (かれら)
they (usually male); them
()
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
子供 (こども)
child; children
()
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
とき (とき)
regular (stops at every station) Jouetsu-line Shinkansen
から (から)
from (e.g. time, place, numerical quantity); since; from (originator); by; because; since; out of (constituent, part); through (e.g. window, vestibule); after; since
お互い (おたがい)
mutual; reciprocal; each other
()
at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although
知る (しる)
to be aware of; to know; to be conscious of; to cognize; to cognise; to notice; to feel; to understand; to comprehend; to grasp; to remember; to be acquainted with (a procedure); to experience; to go through; to learn; to be acquainted with (a person); to get to know; to concern

Kanji

Readings: ヒ、 かれ、 かの、 か.の
Meanings: he, that, the
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: ゴ、 たが.い、 かたみ.に
Meanings: mutually, reciprocally, together
Readings: チ、 し.る、 し.らせる
Meanings: know, wisdom