A great deal of dust and poisonous gas produced in the process of opencut mining pollutes the environment seriously.
露天开采过程中产生大量的粉尘和有害气体，严重污染了环境。
Its unusually large nucleus gave off a great deal of dust and gas -estimated at roughly 18 to 25 miles (30 to 40 kilometers) across -appeared bright to the naked eye.
它异常巨大的彗核释放出大量的尘埃和气体——其彗核直径估计有18到25英里(30到40公里)——使它能够被肉眼清晰地看见。
Its unusually large nucleus gave off a great deal of dust and gas - estimated at roughly 18 to 25 miles (30 to 40 kilometers) across - appeared bright to the naked eye.
它异常巨大的彗核释放出大量的尘埃和气体——其彗核直径估计有18到25英里(30到40公里)——使它能够被肉眼清晰地看见。
The plants are permanently exposed to moisture, dirt, dust, oil and grease and failures cost the operating company a great deal of money.
这些工厂长年累月地暴露在潮湿，污垢，灰尘，油脂和故障的环境中，给公司运营造成了大量的资金损失。
The plants are permanently exposed to moisture, dirt, dust, oil and grease and failures cost the operating company a great deal of money.
这些工厂长年累月地暴露在潮湿，污垢，灰尘，油脂和故障的环境中，给公司运营造成了大量的资金损失。
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