公司为价格上涨提供了合理的解释，理由是生产成本上升了。

The company offered a ___reasonable explanation for the price increase, citing higher production costs.

请为你上周五缺席会议提供一个合理的解释。

Please provide a ___reasonable explanation for your absence from the meeting last Friday.

一个科学理论必须建立在有可观察证据支持的合理解释之上。

A scientific theory must be built on ___reasonable explanations that are supported by observable evidence.