飞行

飞行 refers to the act of flying or a flight, typically in the context of an aircraft. It can also refer to the movement of birds or other objects through the air.

The character 飞 (fēi) means 'to fly' or 'flight,' and 行 (xíng) means 'to go' or 'to move.' Together, they form a compound that literally translates to 'to fly' or 'a flight,' emphasizing the motion through the air.

飞行 is commonly used in aviation contexts, such as describing an airplane's journey from one place to another. It can also appear in poetic or metaphorical expressions, such as 'the flight of time,' which suggests the passage of time as something swift and inevitable.