For example, a key implementation challenge is the lack of uniformity between the APIs of different sites.

例如，一个关键的实现挑战是在不同站点的API之间缺乏统一性。

youdao

"It is a challenge after just a few months of implementation to be able to speak with confidence about when these things will occur,"

VOA: standard.2009.09.04

After that, starting the Opportunity Collaboration was merely an implementation challenge.

FORBES: Connect

At that meeting issues bound to be discussed include the Hack SDMI challenge and implementation of Phase 2 of SDMI, which will bar the playback of non-SDMI music files on SDMI-compliant devices.

CNN: Digital music security initiative nearly ready

Jordan enacted a freedom of information law in 2007, and has faced the difficult challenge of effective implementation.

UNESCO: Communication and Information