您要查找的是不是：
- sister strand exchange 姐妹股互换
- Clarifying the mechanics of DNA strand exchange in meiotic recombination 澄清减数分裂重组过程中DNA链交换的结构
- He eld off his departure until his sister had come. 他推迟行期直到他妹妹来后才走。
- You must have mistaken her for her sister. 你一定是把她误认为是她的姊妹了。
- She twirled a strand of hair round her finger. 她把一绺头发卷绕在手指上。
- She was envious of her sister's new job. 她很羡慕姐姐的新工作。
- My sister speaks Cantonese very fluently. 我姐姐广州话说得很流利。
- She was extinguished by her sister. 她的妹妹使她相形见绌。
- How old is your sister? She is thirteen years old. 你的姊妹几岁？她十三岁。
- My sister is always a studious student. 我妹妹一直是一个勤奋好学的学生。
- Cut some pineapple for your sister. 给你姐姐切几片菠萝吧。
- Can Mary bed down with her sister? 玛丽可不可以跟她姐妹同睡一床？
- They took turns in nursing his sister. 他们轮流照顾他的妹妹。
- He delights in teasing his younger sister. 他以戏弄他妹妹为乐。
- Do you accept foreign exchange certificate? 你们接受外汇券兑换券吗？
- My sister never tires of talking about her work. 我姐姐总是不厌其烦地谈论她的工作。
- Trading on the Stock Exchange was light today. 证券交易所今日交投平平。
- I'm stuck with my sister for the whole day. 我一整天都让妹妹给缠住了。
- I'll help you for yaw sister's sake. 看在你姐姐面上，我会帮你的。
- A soldier was wounded in the exchange. 一名士兵在交火中受伤。
