You use incidentally to introduce a point which is not directly relevant to what you are saying, often a question or extra information that you have just thought of.
例句
'I didn't ask you to come. Incidentally, why have you come?'“我没有叫你来。顺便问一下,你为什么过来?”The tower, incidentally, dates from the twelfth century.那座塔,顺便提一下,可以追溯到 12 世纪。
ADV
附带地;伴随地
If something occurs only incidentally, it is less important than another thing or is not a major part of it.
例句
The letter mentioned my great-aunt and uncle only incidentally.信中仅附带提到了我的姑奶奶和叔叔。
英汉词典释义
adv.
顺便提一句
Incidentally, I think you still owe me some money.顺便说一句, 我想你还欠我一些钱。
英英词典释义
Adverb
1. introducing a different topic;
"by the way, I won't go to the party"
2. in an incidental manner;
"these magnificent achievements were only incidentally influenced by Oriental models"
3. by the way;
"apropos, can you lend me some money for the weekend?"