| 单词 | 定向天线 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔directional antenna〕An antenna that receives or sends signals most effectively in a particular direction.定向天线：在特定方向最有效地接收或发送信号的天线美国传统〔directional〕The radio has a directional antenna.这台收音机有定向天线。韦氏高阶 |
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