pyrogenic rock的用法和樣例：
例句
- County in intrusive rock is acidic magmatic rocks.
縣境內的侵入巖主要是酸性巖漿巖。 - Italy's Mount Etna provides a vivid image of one of the birthplaces of igneous rock during a night eruption.
意大利的埃特納火山在一個(gè)晚上的噴發(fā)展現了一個(gè)巖漿巖誕生地的鮮明形象。 - A seam of ingeous rock crops out at that point.
一層火成巖在那兒冒出來(lái)。 - Igneous rock that has solidified beneath the earth's surface.
已經(jīng)在地表凝固的火成巖。
