Some experts believe it is one of several fungal diseases that enters weakened stems that have been injured or cracked, often simply by the wind.
一些专家相信它是几种真菌之一侵入受伤或受损的弱茎所致，常见的例如被风吹受损。
Some experts believe it is one of several fungal diseases that enters weakened stems that have been injured or cracked, often simply by the wind.
一些专家相信它是几种真菌之一侵入受伤或受损的弱茎所致，常见的例如被风吹受损。
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