1. The wisent is an endangered species due to habitat loss and hunting.
（欧洲野牛是一种因栖息地丧失和捕猎而濒临灭绝的物种。）

2. Wisents were once widespread across Europe, but their population has significantly declined over the years.
（欧洲野牛曾经广泛分布在整个欧洲，但它们的数量在多年来显著减少。）