Therefore, the true origin of any piece of wood packing material is difficult to determine and thus its phytosanitary status cannot be ascertained. 因此，所有木質(zhì)包裝材料的真實(shí)原產(chǎn)地難以確定，從而使其植物檢疫狀況也不能確定。
Our country's port inspection and quarantine services intercepted pinewood nematode in wood packing materials from the U. S. and Japan for many times. 我國的口岸檢驗檢疫機關(guān)從來(lái)自美國和日本的木質(zhì)包裝中多次截獲到松材線(xiàn)蟲(chóng)。
