详细解释:a. 挤出的, 突出的, 喷出的
英语解释：
形容词 extrusive:
of rock material; forced out while molten through cracks in the earth's surface详细解释：
ex.tru.sive
adj.（形容词）Tending to push or thrust out.挤出的：易于推出或掷出的Tending to protrude or project.伸出的：易于伸出的或突出的Derived from magma poured out or ejected at the earth`s surface. Used of igneous rocks.喷出的火山的：来自于喷出或喷在地表的岩浆的。用于火成岩