Tā qízhe mótuōchē zài chēliú zhōng shéxíng chuānsuō.
He weaved through traffic on his motorcycle.
Tips
memory
蛇 (shé) means snake, and 行 (xíng) means to move/travel. Picture a snake slithering in an S-shape — that sinuous, side-to-side movement is exactly what 蛇行 describes.