只有在西南地区才会出现
“They're found only in the southwest.”
THE DIALOGUE REEL
“Such poisons are extremely rare in the Great Tang.”
只有 在 西南地区 才会出现
“They're found only in the southwest.”
西南
“Southwest?”
Direct spoken expression in this communicative setting.
In ancient Chinese historical fiction, the southwestern frontier was historically perceived as a remote region rich in exotic herbs, esoteric arts, and rare venoms.
LEARNING CHUNKS & PARTICLES
southwestern region
Standard geographical term referring to southwestern China, often associated in historical contexts with exotic plants and poisons.
only then will it appear / is exclusively found
Use this pattern to emphasize the exclusivity of an occurrence or location.