| 单词 | 安全警报 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔alert〕A security alert was issued after four men escaped from the prison.4 名罪犯越狱后，当局发出安全警报。牛津搭配〔deterrent〕The security alarm is a theft deterrent.安全警报器可以用来防盗。韦氏高阶〔security〕The station was closed for two hours because of a security alert.由于有安全警报，车站关闭了两小时。剑桥高阶The station was closed for two hours because of a security alert.由于安全警报，车站关闭了2小时。剑桥国际 |
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