如果说硬件瓶颈可以解释一部分飞机延误和取消的话，还有一个原因是民航总局无法控制的。
While infrastructure bottlenecks and overbooking partially explain why flights are delayed or cancelled, there are other reasons beyond the CAAC's command.
youdao
他会解释其延误的原因。
He will explain for its delay.
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