久经沙场：CSGO极限磨损之秘

"久经沙场" is a Chinese phrase that means "long experience in the field," or "having been through a lot in the field." In the context of Call of Duty: Secure Operations (CSGO), this phrase might refer to players who have been playing and mastering the game for a long time and have a high level of skill and experience.

"极限磨损之秘" is a Chinese phrase that translates to "the secret of extreme wear and tear." In the context of CSGO, this phrase might refer to the unique way that some players have been able to achieve extremely high levels of skill and performance despite having played the game for a long time. This might involve tips and tricks for getting the most out of the game, such as optimizing their weapon settings, learning how to use their favorite weapons effectively, and developing strategies for playing team-based modes.