| 例句 |
The island rises sheer from the sea, circumscribed by steep limestone cliffs.这个岛屿完全浮出海面，四周是陡峭的石灰岩壁。Behind the beach is a huge semicircle of limestone cliffs.海滩后面是一大片半圆形的石灰岩悬崖。Limestone is quarried in this area.这一地区有石灰岩可开采。The white limestone formed a dramatic panorama against the darkening sky.白色的石灰岩衬着渐渐灰暗下来的天空，构成了一幅令人叫绝的全景图。The cliffs are characterized by remarkable zigzagging strata of shale and sandstone.这些悬崖的特征是它们由一层层清晰易辨的页岩、石灰岩和砂岩交错构成。The river had carved channels in the limestone rock.河水在石灰岩上冲刷出了一条条水道。Limestone is known to retain moisture.石灰岩能储存水分。The river is underlain by limestone.这条河的河床是石灰岩。The limestone is sufficiently fissured for tree roots to have breached the roof of the cave.石灰岩上有许多缝隙，故而树根能从岩洞顶部长出来。The hardness of limestone varies depending on the area in which it is found.石灰岩的硬度因产地而异。The local limestone is very porous.当地的石灰岩是多孔的。This area has been quarried for limestone.这一地区已被开辟为石灰岩采石场。 |