with certainty – phrases

English	Chinese
The actual make-up of detonation gases emitted on mines cannot be accurately determined and this means that potentially powerful GHGs like CH₄ cannot be quantified with any certainty	采矿时喷发的爆炸气体实际成分没法准确定论、这就是说、像甲烷这种有严重潜在危害的温室气体没法准确量化
The exact final composition of detonation gases emitted to atmosphere is actually difficult to determine with certainty	正是涌人大气的爆生气体、其最后的合成、其实难以准确定论