spell out sth.困难

In general, an HAP spells out when and how officials should issue heat warnings and alert hospitals and other institutions.

一般来说，高温行动计划会明确规定官员应在何时、以何种方式发布高温预警，并向医院和其他机构发出警报。

Spell out their argument fully and charitably.

完整而宽容地阐明他们的论证。