在线预订量的增长是以GDS和电话预订渠道衰退为代价的，后两者的预订量目前已经许多年出现下降。

The increase in Internet bookings comes at the expense of the GDS and Voice Channels, both of which have been in decline for many years now.

youdao

然而，在线渠道预订量上升的代价是GDS和电话渠道的下降，这两个渠道的预订量至今已连续下降了好多年。

This increase in Internet bookings comes at the expense of the GDS and Voice Channels, both of which have been declining for many years now.

youdao

于是资金大部分来自非官方的渠道，代价非常高。

Instead, money often comes from unofficial sources, at great cost.

youdao