毎朝地下鉄があんなに混雑しなかったらなあ。

I wish the subway wasn't so crowded every morning.

毎朝(まいあさ)地下鉄(ちかてつ)があんなに混雑(こんざつ)しなかったらなあ。

Maiasa chikatetsu ga annani konzatsushinakattara nā.

毎朝 (まいあさ、まいちょう)

every morning

地下鉄 (ちかてつ)

underground train; subway

が (が)

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

あんなに (あんなに)

to that extent; to that degree

混雑 (こんざつ)

congestion; crush; crowding; jam; confusion; disorder

なあ (なあ)

hey; say; look; used to get someone's attention or press one's point

Readings: マイ、ごと、 -ごと.に

Meaning: every

Readings: チョウ、あさ

Meanings: morning, dynasty, regime, epoch, period, (North) Korea

Readings: チ、ジ

Meanings: ground, earth

Readings: カ、ゲ、した、しも、もと、さ.げる、さ.がる、くだ.る、くだ.り、くだ.す、 -くだ.す、くだ.さる、お.ろす、お.りる

Meanings: below, down, descend, give, low, inferior

Readings: テツ、くろがね

Meaning: iron

Readings: コン、ま.じる、 -ま.じり、ま.ざる、ま.ぜる、こ.む

Meanings: mix, blend, confuse

Readings: ザツ、ゾウ、まじ.える、まじ.る

Meaning: miscellaneous