marker attachment

例句：

1. 1. The marker attachment is essential for marking the boundaries of the area.
   标记附着物对于划定区域边界至关重要。
2. 2.The researcher attached an electronic tag to the animal to track its movement.
   研究者给动物挂上一个电子标签以追踪其移动。
3. 3.The company attaches great importance to environmental sustainability.
   该公司非常重视环境可持续性。