申し訳ありませんが、在庫がありません。

申し訳ありませんが、在庫がありません。

I'm afraid we are out of stock.

申(もう)し訳(わけ)ありませんが、在庫(ざいこ)がありません。

Mōshiwake arimasen ga, zaiko ga arimasen.

申し訳 (もうしわけ)

apology; excuse

有る (ある)

to be (usu. of inanimate objects); to exist; to live; to have; to be located; to be equipped with; to happen; to come about

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

在庫 (ざいこ)

inventory; stock; stockpile

Readings: シン、もう.す、もう.し-、さる

Meanings: have the honor to, sign of the monkey, 3-5PM, ninth sign of Chinese zodiac

Readings: ヤク、わけ

Meanings: translate, reason, circumstance, case

Readings: ザイ、あ.る

Meanings: exist, outskirts, suburbs, located in

Readings: コ、ク、くら

Meanings: warehouse, storehouse