large mass of intrusive igneous rock believed to have solidified deep within the earth
同义词：batholite, pluton, plutonic rock
batholith详细解释
bath.o.lith n.（名词）A large mass of igneous rock that has melted and intruded surrounding strata at great depths.岩基：大量的已经熔化并已侵入周围地壳岩层的火成岩 【引伸】 bath.olith.ic adj.（形容词）
