travel warning

• 旅行警告

travel warning的用法和样例：

例句

1. As countries have issued travel advisories, aviation and tourism industry to bear the brunt of suffering in the economic crisis suffered another blow at the same time.
   随着各国相继发布旅行警告，航空业和旅游业首当其冲，在饱受经济危机煎熬同时再遭打击。