删除第六章“国外引种检疫”的内容。
The content of Chapter VI"Quarantine of Varieties Introduced from Abroad"is deleted.
此后，番茄又被多次、多途径的从国外引种。
Afterwards tomato is introduced from abroad through various channels for many times.
此后，番茄又被多次、多途径的从国外引种。
Afterwards tomato is introduced from abroad through various channels for many times.
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