File Read And Write, but with less change, rather than copy a file.

文件读写，相当于复制一个文件，但有少量内容更改。

youdao

Less obviously, performance can change from build to build or release to release, such that you can start out with good performance but lose it somewhere along the way.

并不明显得是，性能可以从一个构架到另一个构架或者从一个发布版本到另一个发布版本发生变更，比如您开始时可以有很好的性能，但是也可能在中途的某个位置遗失了好的性能。

youdao

Less obviously, performance can change from build to build or release to release, such that you can start out with good performance but lose it somewhere along the way.

并不明显得是，性能可以从一个构架到另一个构架或者从一个发布版本到另一个发布版本发生变更，比如您开始时可以有很好的性能，但是也可能在中途的某个位置遗失了好的性能。

youdao