1. During the earthquake rescue, onlookers are urged not to block emergency crews' way.2. Environmentalists appeal to everyone to save water and electricity.3. Due to heavy rain the police department is advising that all residents drive safely.4. "Do not take the elevator during an earthquake," the police warned.
 appeal recommend; suggest; advise encourage; urge caution; warnappeal 是最貼切的說法. 不同的情況用不同的字, 像鼓勵就可以用, 有警告暗示就可用.
1. 環境保護學家呼籲大家省電省水.2. 警察呼籲大家大雨中行車安全.3. 警察呼籲大家"別在地震時搭電梯."