v. extend in one or more directionsv. become larger in size or volume or quantityv. make bigger or wider in size, volume, or quantity
vt. 使膨胀, 详述, 扩张vi. 张开, 发展vt. 展开vi. 展开[计] 展开; DOS外部命令:将原始DOS磁盘上的压缩文件解压缩并拷贝到硬盘上