basalt

玄武岩英释中释na type of dark green-black rock

1 But under the water, volcanoes continued to erupt, sending up magma and forming mountains of basalt..但是在水下，火山依旧喷发，滚滚岩浆形成了玄武岩的山脉。

2 As they approached the shore, a lanky, suntanned, salt-encrusted 26-year-old stepped out with a splash and clambered up onto a jumble of broken basalt..当他们到达海岸，一个瘦长的，黝黑的，身上沾著些许海盐的26岁青年溅踏着水面爬上一堆杂乱破碎的玄武岩。