最可能的解释是他的飞机晚点了。

The most likely explanation is that his plane was delayed.

《牛津词典》

假设一架飞机晚点到达休斯顿，机上的“大陆”空乘人员已经结束了他们的轮班。

Let's say a plane arrived late in Houston and the "Continental" flight attendants onboard had finished their shift.

youdao

当我到达的时候，飞机晚点了。

When I arrived, my plane was late.

youdao

You go on an airplane and then after the usual delays, the plane begins to accelerate down the runway.

你坐上飞机,正常晚点之后,飞机就开始沿着跑道加速

耶鲁公开课 - 基础物理课程节选