Infectious bursal disease virus ( IBDV ) is an important pathogenic agent of chicken.传染性法氏囊 病毒是鸡的一种重要的病原.The distribution and histology of lymphoid tissue in the Fabricius'bursal stalk were studied.研究了番鸭法氏囊柄部淋巴组织的分布...
他们俩都很不友善，让我非常难过。They have both behaved very badly and I am very hurt.用友善和富有同情心的倾听来重拾她的信心。Build her up with kindness and a sympathetic ear.他很大方而且，你知道，很友善，很有礼貌。He's generous and, you know, very nice, very polite....