この契約は一年間有効です。

この契約は一年間有効です。

This agreement holds good for a year.

この契約(けいやく)は一(いち)年間(ねんかん)有効(ゆうこう)です。

Kono keiyaku wa ichi nenkan yūkō desu.

此の (この)

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

契約 (けいやく)

contract; compact; agreement

は (は)

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

一 (いち)

one; best; first; foremost; beginning; start; bottom string (on a shamisen, etc.)

年間 (ねんかん)

year (period of)

有効 (ゆうこう)

validity; legality; availability; effectiveness

です (です)

be; is

Readings: ケイ、ちぎ.る

Meanings: pledge, promise, vow

Readings: ヤク、つづ.まる、つづ.める、つづま.やか

Meanings: promise, approximately, shrink

Readings: イチ、イツ、ひと-、ひと.つ

Meanings: one, one radical (no.1)

Readings: ネン、とし

Meanings: year, counter for years

Readings: カン、ケン、あいだ、ま、あい

Meanings: interval, space

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