abstract geometric semi circle with stripe line arranging motion pattern background - 線條畫 幅插畫檔、美工圖案、卡通及圖標
black pen hand drawn collection of lines, x marks, underline strokes, doodles and arrows. - 線條畫 幅插畫檔、美工圖案、卡通及圖標
science and research dash abstract background. angled dash background pattern. abstract blue rounded lines diagonal halftone transition. - 線條畫 幅插畫檔、美工圖案、卡通及圖標
gray vertical lines pattern. abstract of monochrome halftone geometric pattern background. - 線條畫 幅插畫檔、美工圖案、卡通及圖標
abstract black and white vector illustration radial stripe gradient turning rays pattern - 線條畫 幅插畫檔、美工圖案、卡通及圖標
meeting, discussion, brainstorming. four colleagues gathered and discussing with each other. - 線條畫 幅插畫檔、美工圖案、卡通及圖標
