“be on the watch”造句，怎麼用be on the watch造句

To be on the watch for traitors

The police warned people to be on the watch for intruders

To be on the watch for new trends or information.

Just be happy, don't worry, don't trample on the quiet, embrace the roar of the wind and rain, even the ends of the earth, also want to know the best sincerity.