彼らが結婚するっていった時には驚いたよ。

When they said they were going to get married, it blew my mind.

彼(かれ)らが結婚(けっこん)するっていった時(とき)には驚(おどろ)いたよ。

Karera ga kekkonsuru tte itta tokini wa odoroita yo.

彼ら (かれら)

they (usually male); them

が (が)

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

結婚 (けっこん)

marriage

って (って、て)

casual quoting particle; indicates supposition; if ... then; indicates a rhetorical question; indicates certainty, insistence, etc.

結う (ゆう、いう)

to do up (hair); to braid; to fasten; to fix

時に (ときに)

by the way; incidentally; sometimes; occasionally

は (は)

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

驚く (おどろく)

to be surprised; to be astonished

よ (よ)

indicates certainty, emphasis, contempt, request, etc.; used when calling out to someone; used to catch one's breath or get someone's attention; yo!

Readings: ヒ、かれ、かの、か.の

Meanings: he, that, the

Readings: ケツ、ケチ、むす.ぶ、ゆ.う、ゆ.わえる

Meanings: tie, bind, contract, join, organize, do up hair, fasten

Reading: コン

Meaning: marriage

Readings: ジ、とき、 -どき

Meanings: time, hour

Readings: キョウ、おどろ.く、おどろ.かす

Meanings: wonder, be surprised, frightened, amazed