The word "莅临" is formed by combining the characters "莅" and "临", both of which individually relate to the concept of arriving or being present. "莅" means to arrive or attend, often in a formal or official capacity, while "临" means to approach, come to, or be present at a place. When joined, they reinforce each other to create a compound word that specifically denotes arriving or making an appearance, typically used in respectful or ceremonial contexts to indicate the presence of someone of importance.