副詞 incidentally:

1. introducing a different topic
   同義詞：by the way, by the bye
2. in an incidental manner
   同義詞：accidentally, by chance
3. by the way
   同義詞：apropos

1. Incidentally, John's coming home next week.
   附帶說(shuō)一下，約翰下星期要回家。
2. Incidentally, if you want that book, I'll bring it next time.
   順便說(shuō)一句，如果你要那本書，我下次帶給你。
3. And, incidentally, it is a chronic complaint of wives that their husbands do not notice new dresses, new hats, and changes in household arrangements.
   而且，順便說(shuō)一句，妻子們經(jīng)常抱怨，他們的丈夫不注意新衣服、新帽子和家庭擺設(shè)的變化。

in.ci.den.tal.ly

adv.（副詞）
As a minor or subordinate matter:
偶發(fā)性地：作為附帶的或非主要的事：
例句：
by profession a lawyer and incidentally a musician.
職業(yè)上是律師而業(yè)余是音樂(lè)家

also [-dμnt.lô] Apart from the main subject; parenthetically.
也作 [-dμnt.lô] 順便提起地：與主題不同地；插入地