"a warning that still more bombs could explode"
"a letter of admonition about the dangers of immorality"
"the warning was to beware of surprises"
"his final word of advice was not to play with matches"
"they gave little warning of their arrival"
"she had only had four days' warning before leaving Berlin"
"shook a monitory finger at him"
"an exemplary jail sentence"
Finches and sandgrouse gave warning of the approach of predators.
出自：New Scientist , ssss
Without warning a hurricane struck.sssss J. le Carr&eacusc;
出自： D. Acheson
Susie glanced at me, lifting a warning finger.
出自： G. M. Fraser