Your stepdaughter is the daughter your husband or wife had before you married them. She is not your child by birth; she became yours through the marriage.

Your stepdaughter你的繼女 is是 your husband or wife你先生或太太 had before you married them在跟你結婚之前就已經有 the daughter的女兒。She她 is not不是 your child by birth你親生的孩子；she她 through the marriage是透過婚姻才 became yours變成你的。

She may live with you or not, and she may be a small girl or a grown woman with children of her own — the word says nothing about age, only about how the two of you are related. From her side, you are her stepmother or stepfather.

She她 may live with you or not可能跟你住在一起，也可能不是，and而且 she她 may be可能是 a small girl小女孩 or也可能是 a grown woman with children of her own已經有自己小孩的成年女性——the word says nothing about age這個字跟年紀無關，only about how the two of you are related只跟你們兩個人的關係有關。From her side從她的角度來看，you你 are是 her stepmother or stepfather她的繼母或繼父。

Like the other step- words, it is a plain, official word rather than a warm one.

Like the other step- words跟其他step-開頭的字一樣，it它 is是 a plain, official word一個平實、正式的詞 rather than而不是 a warm one溫暖的詞。

Plenty of people say "my daughter" in everyday talk about a stepdaughter they raised, and bring out "stepdaughter" only when the exact relationship matters — filling in a form, explaining who is who at a wedding, sorting out a will. Nothing is wrong with saying it; just be aware that choosing it marks a line that the family may or may not feel.

Plenty of people很多人 in everyday talk平常講話 say "my daughter"會直接說「我女兒」 about a stepdaughter they raised講的是他們帶大的繼女，and而 only when the exact relationship matters只有在需要說清楚確切關係的時候 bring out "stepdaughter"才會用「stepdaughter」這個字 — filling in a form像是填表格、explaining who is who at a wedding在婚禮上解釋誰是誰、sorting out a will處理遺囑的時候。Nothing is wrong with saying it這樣講並沒有錯；just be aware只是要知道，that choosing it marks a line選擇用這個詞會劃出一條線 that the family may or may not feel而這條線，家人不一定會感覺到。