Usnach

例句：

1. 1.The Usnach is a unique species of bird.
   乌苏里雁是一种独特的鸟类。
2. 2. The discovery of the Usnach has sparked excitement in the scientific community.
   发现乌苏里雁引起了科学界的兴奋。
3. 3. The Usnach is known for its distinctive black and white plumage.
   乌苏里雁以其独特的黑白羽毛而闻名。