half-hydrate-dihydrate 半水二水物
No, Chloral Hydrate has a half-life of only 4 hours in people with a high tolerance.
不是，对“水合三氯乙醛”有较高耐药能力的人，它的半衰期仅为4个小时。
"It is the world's first offshore experiment producing gas from methane hydrate," the official said, adding that the team successfully collected methane gas extracted from the half-frozen substance.
该官员称：“这是世界上首个从甲烷水合物中提取天然气的离岸实验。”他还说，该团队成功地收集了从这一半冰冻状态的物质中提取出的甲烷气体。
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