以点、横画、间隔的安排来代表字母、数字或标点符号的系统。

System for representing letters, numerals, and punctuation marks by a sequence of dots, dashes, and spaces.

youdao

试一试以3为间隔从100倒数数，或者，倒背字母表。

Try counting backwards from 100 by 3's, or saying the alphabet backwards, etc.

youdao

答：微笑。因为两个字母S 中间隔了一里。

Smiles. Because there' s a mile between the two "s" s.

youdao