These include places like Central Asia and the Caucasus, where falciparum is unknown—for, unlike falciparum, which is genuinely a tropical disease, vivax can thrive in temperate climes.
这些国家包括中亚和高加索地区，该地居民对恶性疟一无所知，因为恶性疟是地道的热带疾病，而相反，间日疟能在温带气候地区繁殖。
About 400 species: mostly tropical and subtropical, few in temperate Asia, Africa, and America; 34 species in China.
大约400种：在温带的亚洲，非洲和美国主要热带和亚热带，很少；中国有34种。
Small genus of densely tufted annual herbs; north temperate regions and South America and tropical Africa and Asia.
一个紧密丛生的一年生草本植物小属；产于北温带和南美及热带非洲和亚洲。
应用推荐