We've been doing things a specific way for a long time, and that's hard to abandon, even for more efficiency, given the number of processes that would need to change along with it.

我们长期来都以精确的方式做事情，因为很多的程序也要随之一起改变，所以从效率的角度，我们也很难放弃。

youdao

To abandon what one is doing or planning to do.

放弃某人正在做的或打算做的。

youdao

You might expect him, therefore, to be the first to abandon the president as Senator McCain gets ready for his own White House run, but he's not doing that.

NPR: Slate's Politics: Why McCain Sticks with Bush