常見例句雙語(yǔ)例句The subsidence is one form of coal mine secondary of the geological calamity.和龍市地質(zhì)災(zāi)害主要爲(wèi)泥石流，其次是崩滑災(zāi)害。Coal mine environment geological calamity are originates of coal mine environment problems.煤鑛環(huán)境地質(zhì)災(zāi)害是煤鑛區(qū)環(huán)境問題的主要發(fā)生源。The coal seam methane is a source of coal mine gas calamity, and also a clear energy resources.甲烷是強(qiáng)烈的溫室氣躰，煤層甲烷是煤鑛瓦斯災(zāi)害之源，也是潔淨(jìng)的能源。 返回 coal mine calamity