Heat causes the expansion of gases.热使气体膨胀。The emission of gases such as carbon dioxide should be stabilised at their present level.二氧化碳等气体的排放应该稳定在当前水平。Gases and digestive around in your empty stomach and before you know ...
These gases would seriously damage the patient's respiratory system.这些毒气会严重损害患者的呼吸系统。Industry has been working at developing harmless substitutes for these gases.该行业一直在努力开发一些可以替代这些气体的无害物质。The problem was that the ex...