pitchstone

英式发音 ['pɪtʃstəʊn] 美式发音 ['pɪtʃ,ston]

一般意思:

n.[地]松脂石

完整意思:

一种形成于火山喷发的玄武岩或安山岩熔岩中的玻璃质或碎屑质岩石。

词性:

名词

造句:

1. Pitchstone is formed when lava rapidly cools and solidifies, resulting in a glassy rock.
(当熔岩迅速冷却并凝固时,就形成了玻璃质的pitchstone岩石。)
2. Thepitchstonedeposits in the area indicate past volcanic activity.
(该地区的pitchstone沉积物表明曾发生过火山活动。)

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