Admiration
Wonder
noun, verbal noun
I'm so surprised it caused me to sigh. This is like when you run into a movie star, and you go in surprise shock. Then, you breathe out in a sigh because of your great amount of admiration and wonder for this person.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
彼の演技には、皆が驚嘆した。
Everyone felt wonder at his performance.
彼女の知識量には驚嘆するしかありませんよ。
One can only admire the amount of knowledge she has.
その太陽光発電所の規模に驚嘆しました。
I was amazed at the size of the solar power plant.
彼は驚嘆して、「この世界、本当によくできてる」とつぶやいた。
He marveled and murmured, "This world is really well made."