Una
abbr. 联合国协会（United Nations Association）
🗣️ 情景例句
I'm calling to ask you some questions about Susan.
我打电话是想问一些关于苏珊的事。
The children were thrilled with joy at the sight of the parade.
孩子们看到游行队伍时异常兴奋。
The doctor said he could do nothing to help him.
医生说他对此无能为力。