The main ways of avoiding and eliminating the role conflicts may be: reasonable position of investigation role, differentiateof some roles, and stress the control over outside role.
避免和化解冲突的方法是：角色的合理定位、部分角色的分化、角色之间的层次化以及加强角色的外部监督。
2
Lots of experiments have demonstrated that people with music training can better differentiate certain sounds.
大量实验已经表明，受过音乐训练的人能够更好地区分某些声音。
3
Holocene sediments contain remnants of more recent plants and animals, so it's pretty easy to differentiate geologically between these two Epochs.