demicolumn

例句：

1. 1. The column was made of a semicolumnar stone.
   那根柱子是用半柱石制成的。
2. 2.The book is divided into two parts, with each part containing a semicolumn of text.
   这本书被分成两部分，每一部分包含半柱的文本。
3. 3. The researcher found that the semicolumnar structure in the plant could be beneficial for growth.
   研究者发现植物中的半柱结构对生长是有益的。