Keyed up是什么意思阿?

要看具体语境：
1. Naturally, you were keyed up when you went on the platform for the first time.
你第一次登上讲台感到“紧张”是很自然的。

2. The crowd was keyed up for the football match.
群众为这场足球赛而“欢欣鼓舞”。

keyed-up
[`ki:d`Qp]
adj.
激昂的, 激烈的