ebullient

1. ADJ If you describe someone as ebullient, you mean that they are lively and full of enthusiasm or excitement about something. 精力充沛的; 热情洋溢的[正式]

...the ebullient Russian president. …精力充沛的俄罗斯总统。

2. ebullienceN-UNCOUNT 精力充沛; 热情洋溢

His natural ebullience began to return. 他天生的热情开始恢复了。