畅快

例句：

1. 1. After a long day of work, I feel so much more relaxed and content when I take a hot shower.
   经过长时间的工作后，我洗个热水澡感觉整个人都放松多了。
2. 2. The smooth operation of the new machine made it very easy for us to complete the task.
   新机器的顺畅操作让我们轻松地完成了任务。
3. 3. She laughed heartily at the joke, feeling truly happy and content.
   她开心地大笑，感到非常愉快和满足。