mathematical symbols
national symbols
religious symbols
symbols of peace
A: Do you understand what these symbols mean?
A：你明白这些符号是什么意思吗？
B: Not really, they are quite complex symbols.
B：不太明白，它们是很复杂的符号。
1) 符号
2) 标志
3) 象征物
1. 符号；标志；象征物
noun
1. A mark, sign, or character that represents something else.
Synonym: signs, marks, emblems