1.Thumbnails guide and maintain perspective as indicated by the right top darkened chevron.
缩略图可引导和保持洞察力，如右上角灰暗的图案所示。
2.Assist top management to work out, implement sales policy to maintain perspective sales team.
协助最高管理层制定、改善、执行适宜的销售政策，建立并保持高效的团队。
3.It is also helpful to maintain perspective.
全面看问题也很重要。