the activities involved in preventing the spread of animal and plant diseases from one area to another 生物安全保障;生物防疫 the importance of biosecurity in poultry farming 生物安全在家禽养殖中的重要性 biosecurity measures to prevent another outbreak 防止再次爆发的生物安全措施
👨🏻🏫 Mr. Ng 牛津詞典 📚 – oxford.mister5️⃣.net
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