The water is fine once you're in!
你一旦下了水，就会觉得水里挺舒适。
Keep going like that ─ you're doing fine.
就这样做下去——你做得蛮不错嘛。
He was lucky to get off with a small fine.
他侥幸逃脱惩罚，交了一小笔罚款了事。
It's a fine performance that commands attention from first to last.
Things were going fine until you showed up.
你一露面就把事情搞糟了。