The most likely explanation is that his plane was delayed.
最可能的解释是他的飞机晚点了。
to offer/provide an explanation
给予解释
I can't think of any possible explanation for his absence.
我想不出他缺席的任何理由。
She didn't give an adequate explanation for being late.
她没有给出充分的理由说明迟到的原因。
The book opens with an explanation of why some drugs are banned.
本书在开篇阐述了禁用某些药物的原因。
an explanation as to why he had left early
关于他提早离开的原因说明
She left the room abruptly without explanation .
她未作解释就突然离开了房间。
‘I had to see you,’ he said, by way of explanation.
“我当时必须来找你。”他解释道。
For a full explanation of how the machine works, turn to page 5.
关于机器工作原理的详细说明，请翻阅第 5 页。
1.解释,注释;说明
2.辩解,剖白
3.(消除误会后)和解
1.a reason you give for something that has happened or something you have done
2.a description of how something works or of how to do something
1.He spoke in a cold, dead tone, as if making a necessary but distasteful explanation to a stranger.
他的话透着一种冰冷和沉闷，像是向一位陌生人做一个必须但却不情愿的解释。
2.Although people often assume that the shivers come at the coldest part of the night, the actual explanation is found within the body itself.
人们想当然的认为是在夜晚最冷的时候会哆嗦，然而真正能解释的是人体自身。
3.Explanation: One of the most identifiable nebulae in the sky, the Horsehead Nebula in Orion, is part of a large, dark, molecular cloud.
解说：这是天空中最易辨认的星云之一。猎户中的马头星云是一个巨大的黑暗分子云的一部分。
4.So it seems to me that a cosmic event of this type is a better explanation for the mass extinction of these animals.
以我所见因此这个类型一个宇宙事件是这些动物的许多绝种的一个更好的解释。
5.It appeared to be a leaky ceiling, but a Staples Center official provided an unexpected explanation.
这看起来是一块漏的天花板，但是斯坦普斯中心的官方人员给出了一个意外的解释。
6.The teacher walked about the classroom , using his hands to help him in his explanation .
老师在教室里走来走去，用手势帮助讲解。（表示方式）
7.The book uses Visual C++ programming, program examples of rich, thorough explanation, source code comments clear, easy to understand.
全书使用VisualC++编程，程序实例丰富，讲解透彻，源代码注释清晰，容易理解。
8.He felt that the time was up. An explanation might as well come now as later. Therefore, he shook his head in the most gentle negative.
他觉得是时候了。迟早都要解释，现在就解释也一样。因此，他极其温柔地摇摇头表示否定。
9.A few days later at a cabinet meeting, Roosevelt spoke strongly for a "legal" explanation of America's rights in the Panamanian straight.
在几天后的内阁会议上，罗斯福发言强烈要求对美国在巴拿马地峡的权利有个“法律上的”解释。
10.Through case analysis, explanation result of this method tallies with the oil field actual situation, it has the actual application value.
通过实例分析，该方法的解释结果符合油田的实际情况，具有实际的应用价值。