研究人员计划在北美向西扩展“仙人掌螟疫病菌”。
Researchers are projecting a westward expansion of " Cactoblastis cactorum" in North America.
墨西哥位于北美洲的南部。墨西哥的国花是仙人掌。墨西哥的首都是墨西哥城。墨西哥人讲西班牙语。
Mexico is in the southern area of North America. Its national flower is a cactus. Its capital is Mexico City. Mexicans speak Spanish.
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