In both cases, the primary issues are APIs and development environments.

在这两种情况中，主要问题是API和开发环境。

youdao

The issue of the certainty of law involves simultaneously three primary issues of law.

法的确定性问题同时涉及了关于法律的三个元问题。

youdao

"Any discussion of settlements, any discussion of the issues of living in East Jerusalem, should not take precedent over the primary focus of import which is the growing threat of a nuclear Iran,"

VOA: standard.2009.08.06

The primary issues are basic security, the rule of law, and hunger.

FORBES: Education Unleashed: Now It's All Up To You

Colonel ANGELA PEREIRA (U.S. Army): What would you say are the primary issues that are preventing airmen, seamen, soldiers, Marines from getting care when they when they need it?

NPR: Pentagon Holds Mental Health Treatment Hearings

One of the primary issues, unsurprisingly, is light.

ENGADGET: Alt-week 9.8.12: Moon farming, self powered health monitors and bringing a 50,000 year-old girl to life