1. a. Approximately 45 percent of the world’s population live where mosquitoes transmit malaria. b. Approximately 45 percent of the world’s population live in climate zone where mosquitoes transmit malaria. a. 全球大约有45%的人口生活在蚊子传播疟疾的 区域。 b. 全球大约有...

时间:2024-12-17 09:50栏目:行业资料