Older cars inevitably lack the latest safety refinements.

较老式的汽车难免缺乏最新的安全改进。

This section describes the refinements.

本节将描述这种细分。

Security refinements such as record-level locking.

安全改进，比如记录级别的锁定。

Some Issues that may call for further refinements.

需要进一步细化才能解决的一些问题。

Software refinements: efforts to achieve "it just works".

软件细化：努力实现“使其正常工作”。