So was I once myself a swinger of birches.

当年，我是“荡桦树”的能手。

Moreover, proteins are (if I may be permitted to use a handy archaism) the swingers of the biological world.

除此以外，蛋白质还是生物世界的登徒子（请允许我使用一个手得来的古词）。

Now. I'm the king of the swingers

现在，我是流行天王。

Over time, I got to be a pretty good swinger of the hammer.

一段时间后 我铁捶东敲西打很手。

I was writing a book, and I did some research and boy, I found out she was quite the swinger.

我当时在写一本书，我做了一些调查，天啊，我发现她两性关系上有点混乱。