1. However, momentum is always conserved in a collision, whether or not the collision is elastic. 然而，不管碰撞是不是弹性的，在碰撞过程中动量总是守恒的。
2. To every differentiable symmetry generated by local actions, there corresponds a conserved current. 每一种由局域作用所产生的对称性都对应一守恒流。
3. The conserved proline sites are denoted by a "#" and the conserved cysteine sites are denoted by a "*" symbol. Specific secondary structure domains are boxed. 保守的脯氨酸和半胱氨酸位点分别用“#”和“*”表示。特殊的二级结构区域用方框标出，跨膜区用下划线标出。
