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In Belgium and the Netherlands, a virulent new strain of avian flu was wiping out entire chicken farms.
在比利时和荷兰，一种新的恶性的禽流感病毒株系席卷了所有的养鸡场。
youdao
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In Belgium and the Netherlands, a virulent new strain of avian flu was wiping out entire chicken farms.
在比利时和荷兰，一种新的恶性的禽流感病毒株系席卷了所有的养鸡场。
youdao