wilding

n.野生植物；野生苹果

North America has the world's best climate for wild grapes. 北美的气候是世界上最适合野生葡萄生长的。

The disease was practically unknown ten years ago but then it flared and spread like wild fire until it reached epidemic proportions. 这种疾病10年前几乎无人知晓，可它突然爆发象野火般迅速传播，直至流行甚广。