雕刻一般，切磋琢磨成为精华。

They were honed down to the essence, sculpted like stones.

youdao

我早先原该提到，在前一年的秋天，我把我大多数的有才能的朋友组成了一个相互切磋琢磨的社团，我们管它叫做“密社”。

I should have mentioned before, that, in the autumn of the preceding year, I had form'd most of my ingenious acquaintance into a club of mutual improvement, which we called the JUNTO;

youdao

我早先原该提到，在前一年的秋天，我把我大多数的有才能的朋友组成了一个相互切磋琢磨的社团，我们管它叫做“密社”。

I should have mentioned before, that, in the autumn of the preceding year, I had form'd most of my ingenious acquaintance into a club of mutual improvement, which we called the JUNTO;

youdao