Morse code

US /ˈmɔːrs koʊd/
UK /ˈmɔːrs koʊd/
"Morse code" picture
1.

摩尔斯电码

a telegraphic code in which letters and numbers are represented by strings of dots and dashes (short and long signals)

:
The message was sent using Morse code.
消息是使用摩尔斯电码发送的。
Learning Morse code takes practice.
学习摩尔斯电码需要练习。