在过去的O如今，化学药品已经渗进人们的生活，大部分生物都受到其影响。二

In the past, today, chemicals have penetrated into people's lives, and most living things are affected by it. The new chemical weapons born in World War II caused tremendous damage to the human body. Some insignificant changes may completely change the properties of the substance and become poison. Subtle changes in the body's chemicals can cause huge differences in results. Many chemicals and chemicals will cause huge damage to people and the surrounding environment.

In the past, chemicals have seeped into people's lives, and most organisms have been affected by them. The new chemical weapon, which was born in World War II, caused great damage to the human body. Some trivial changes may completely change the properties of matter into poison. Subtle changes in human chemicals can lead to huge differences in results. Many chemicals and chemicals can cause great damage to people and their surroundings.

In the past o today, chemicals have infiltrated into people's lives, most of the organisms are affected by them. The new chemical weapons born in the second world war caused great damage to human body. Some minor changes may completely change the properties of the substance, and thus become poison. Subtle changes in human chemistry can lead to huge differences in results. Many chemicals and chemicals will cause great damage to people and the surrounding environment.<br>