smoke signal
US /ˈsmoʊk ˌsɪɡ.nəl/
UK /ˈsmoʊk ˌsɪɡ.nəl/
名词
1.
烟雾信号
a column of smoke used as a signal, especially one made by a fire on a mountain or hill to send a message
示例:
•
The stranded hikers sent up a smoke signal to alert rescuers.
被困的徒步旅行者发出烟雾信号以提醒救援人员。
•
In ancient times, smoke signals were a common way to communicate over long distances.
在古代，烟雾信号是远距离通信的常用方式。
在 Lingoland 学习这个单词