Umpiring
vt. 为…做裁判（umpire的现在分词形式）
🗣️ 情景例句
And this gentleman is my grandfather, Malcolm Stewart.
这位绅士是我祖父Malcolm Stewart。
Can you finish your work ahead of time?
你能提前完成工作吗？
You're from Australia, aren't you?
你是澳大利亚人，对吗？