この列車乗車券は３カ月有効だ。

この列車乗車券は３か月有効だ。

This ticket is valid for three months.

この列車(れっしゃ)乗車券(じょうしゃけん)は３カ月(げつ)有効(ゆうこう)だ。

Kono ressha jōshaken wa san kagetsu yūkō da.

此の (この)

this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)

列車 (れっしゃ)

train (ordinary)

乗車券 (じょうしゃけん)

passenger ticket

は (は)

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

三 (さん、み)

three; tri-

カ月 (かげつ)

(number of) months

有効 (ゆうこう)

validity; legality; availability; effectiveness

だ (だ)

be; is; indicates past or completed action; indicates light imperative

Readings: レツ、レ

Meanings: file, row, rank, tier, column

Readings: シャ、くるま

Meaning: car

Readings: ジョウ、ショウ、の.る、 -の.り、の.せる

Meanings: ride, power, multiplication, record, counter for vehicles, board, mount, join

Reading: ケン

Meaning: ticket

Readings: ゲツ、ガツ、つき

Meanings: month, moon

Readings: ユウ、ウ、あ.る

Meanings: possess, have, exist, happen, occur, approx

Readings: コウ、き.く、ききめ、なら.う

Meanings: merit, efficacy, efficiency, benefit