1. The researchers are studying the behavior of animals in captivity.
研究人员正在研究被囚禁动物的行为。
2. Many people believe that wild animals should not be kept in captivity.
许多人认为野生动物不应被囚禁。
3. The zoo is committed to providing a safe and enriching environment for animals in captivity.
动物园致力于为被囚禁的动物提供安全和丰富的环境。