Finally, one of the biggest costs is the cost of holding a plane if someone must wait for an escort and becomes late for their flight.

最后，最大的费用是飞机延误造成的费用，如果有人必须等待陪送而延误了时间，该航班就不能立即起飞。

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Finally, one of the biggest costs is the cost of holding a plane if someone must wait for an escort and becomes late for their flight.

最后，最大的费用是飞机延误造成的费用，如果有人必须等待陪送而延误了时间，该航班就不能立即起飞。

youdao