他的皮肤是薄的，头发生长的很慢，和老人一样，他的身体也经常出现问题。
His skin is thinning, his hair grows slowly and he suffers from the physical problems of a pensioner.
使用新文档更新索引数据库的代理目前速度很慢，且未进行优化，通过添加一对跟踪字段到索引文档中就可以解决这一问题。
The agent that updates the index database with new documents is currently rather slow and is not optimized, which can be fixed by adding a couple of tracking fields to the index documents.
下面是一个实际客户案例的问题：客户报告一整天用户在应用程序中的所有活动的速度都很慢。
The following is an example from an actual real customer problem: the customer reported that users were experiencing slow performance in all activities in an application throughout the day.
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