你好!這裏是Hamicat哈米!
print("Hello world!")
#include <iostream> using namespace std; int main() { cout<<"Hello, World!" return 0; }
CO 2 + C ⟶ 2 CO {\displaystyle {\ce {CO2 + C -> 2 CO}}}
1 + 1 = 10 {\displaystyle 1+1=10}