写作建议

1. 第一段

Dichlorodiphenyltrichloroethane (DDT) is a controversial weapon in the fight against malaria, one of the serious public health problems in this world. Data from the Pan-America Health Organization reveals that the malaria cases clearly go down when house spraying goes up. Environmentalists are concerned about DDT effects on environment and human health, it is however the potent weapon against the malaria mosquitoes.

能用一个词表达的时候，就不要用两个词！

Dichlorodiphenyltrichloroethane (DDT) is a controversial weapon in the fight against malaria, one the of most serious global public health problems. Analysis of data from the Pan-America Health Organization reveals that the number of malaria cases clearly decreases when the number of houses sprayed increases. Environmentalists are concerned about the effects of DDT on the environment and human health; however, DDT is still the most potent weapon against the mosquitoes carrying the malaria parasite.

参考文献

Tim Skern: 《Writing Scientific English: A Workbook》