a triumphal arch的用法和样例：
- A triumphal arch;a triumphal ode.
- They built a triumphal arch to memorialize their victory.
- At that time it was a triple gate, resembling a triumphal arch, and was probably not attached to the wall.
- a triumphal arch; a triumphal ode.
- Have you been to the Triumphal Arch?