所有使用联运服务的乘客在登机前必须持有有效机票。

All customers travelling on TransLink services must be in possession of a valid ticket before boarding.

youdao

请登机前一个小时到达登机门。

Please get to the boarding gate an hour before boarding.

youdao

今天早上，我在登机前从机场给她打了电话。

I phoned her from the airport this morning just before I got on board the plane.

youdao