1. 变动性/可变性：multipass 多次性,多次 多次遍历的迭代器,多次通过的算法 | mutating 变动性/可变性 | Named Conformance 名字一致性
1. The dogs are transgenic animals, which means their genetic code has been deliberately modified rather than mutating naturally.
2. Clusters of human infections are worrying because they indicate that the virus might be mutating into a form that is easily transmissible among humans.
3. China is trying to prevent fresh outbreaks in poultry that increase the risk of avian flu spreading to humans and potentially mutating into pandemic influenza.