音标：[di'rekʃәnәl]
a. 方向的
在线英汉词典www.zbyw.cn
directional的短语、例句：
directional adj of direction in space 方向的; 定向的
a directional aerial, ie one that transmits or receives radio signals in one direction only 定向天线.

标签：directional,用法,音标,短语