Requires strict control of the chemical "dihydrogen monoxide", 限制一氧化二氢的使用！

① it may lead to excessive sweating and vomiting; (2) It is the main component of acid rain; (3) in the gas state, can cause severe burns; the ④ accident inhalation also may be fatal; ⑤ it is the cause of the corrosion ; ⑥ it will make reduce the efficiency of car brakes; (7) the substance has been found in the tumors in cancer patients can not be cured.
①它有可能引发过多出汗和呕吐；②它是酸雨的主要成分；③处在气体状态时，可能引起严重灼伤；④发生事故时吸入也有可能致命；⑤它是腐蚀的成因；⑥它会使汽车制动装置效率减低；⑦在不可救治的癌症病人肿瘤中已经发现该物质。