pyrogenic rock的用法和樣例：
例句
- County in intrusive rock is acidic magmatic rocks.
縣境內的侵入岩主要是酸性岩漿岩。 - Italy's Mount Etna provides a vivid image of one of the birthplaces of igneous rock during a night eruption.
義大利的埃特納火山在一個晚上的噴發展現了一個岩漿岩誕生地的鮮明形象。 - A seam of ingeous rock crops out at that point.
一層火成岩在那兒冒出來。 - Igneous rock that has solidified beneath the earth's surface.
已經在地表凝固的火成岩。
