obumbrate

例句：

1. 1. The fabric is obumbrantly stretched over the seams.
   这布料被巧妙地拉紧在缝线上。
2. 2.The bottle was obumbrantly filled with water.
   瓶子被巧妙地装满了水。
3. 3. The artist used a sharp knife to obumbrantly cut the paper.
   艺术家用一把锋利的刀小心翼翼地剪裁纸张。