彼らは川まで前進した。

彼らは川まで前進した。

They advanced to the river.

彼(かれ)らは川(かわ)まで前進(ぜんしん)した。

Karera wa kawa made zenshinshita.

彼ら (かれら)

they (usually male); them

は (は)

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

川 (かわ、がわ)

river; stream; the .... river; (suffix used with the names of rivers)

迄 (まで)

until (a time); till; to; up to; to (a place); as far as; to (an extent); up to; so far as; even; only; merely

前進 (ぜんしん)

advance; drive; progress

Readings: ヒ、かれ、かの、か.の

Meanings: he, that, the

Readings: セン、かわ

Meanings: stream, river, river or three-stroke river radical (no. 47)

Readings: ゼン、まえ、 -まえ

Meanings: in front, before

Readings: シン、すす.む、すす.める

Meanings: advance, proceed, progress, promote