hello /həˈləu/ interj.喂 (表示问候或唤起注意)：Hello, John! How are you?喂，你好!约翰。 Hello!This is Wang Hai speaking. (电话用语)喂!我是王海。say hello to 向…问好：Let’s drive over and say hello to him. 我们开车过去向他问好。