例句與造句

1. Natural gas purification plants must remove co2 because the methane is heading for a liquefied natural gas tanker and must be kept free of cold , solid carbon dioxide ( dry ice ) that could clog the system or because the co2 concentration is too high ( above 3 percent ) to be allowed on the natural gas distribution grid
   天然氣純化廠中，由于甲烷要導(dǎo)入液化天然氣槽，必須嚴(yán)防冰冷堅(jiān)硬的二氧化碳（乾冰）可能堵塞系統(tǒng)，或二氧化碳濃度過高（超過3 % ）導(dǎo)致無法用于天然氣供配網(wǎng)，因此必須脫去二氧化碳。
2. It's difficult to find solid carbon dioxide in a sentence. 用solid carbon dioxide造句挺難的