by the by
英 [bai ðə bai] 美 [baɪ ði baɪ]
by the by基本解释
顺便提一下;
by the by网络解释
1. 顺便提一句:by and large 大体上,总的来说 | by the by 顺便提一句 | a piece of cake 容易的事
2. 顺便说:By the book 按常规 | By the by 顺便说 | *By the numbers 合拍地, 系统地, 按常规地