The word 伸出 is formed by combining two characters: 伸, which means "to stretch" or "to extend", and 出, which means "to go out" or "to emerge". Their combination creates a single, coherent visual and conceptual action where the meaning of the first character (extending) is directly applied and completed by the direction or result indicated by the second character (outward). It is a logical fusion where one part depicts the action and the other its fundamental direction, forming a complete idea of "to stretch out".