have a son to carry on his family name;bear one's husband children and so continue the family line;carry on the family line;continue [carry on] the ancestral line ;

To continue the family bloodline is one of life's most important things.
传宗接代是生命中最重要的事情之一.
来源:网络文摘精选这就让拥有白皙皮肤的女性成为传宗接代更理想的对象.
来源:互联网摘选After the wedding, he took her family's name, to perpetuate the Hua line.
两人完婚以后, 他改姓女家的姓, 为华家传宗接代.
来源:词典精选例句The animal that stands the best survives and reproduces, passing on its characteristics.
站得最好的动物存活了下来并不断繁衍, 传宗接代.
来源:互联网摘选The generations must roll, and the ways whisper only of that single requirement, nothing more.
必须传宗接代.这方式只是轻轻说出了这一需要, 岂有他哉.
来源:英汉文学 - 廊桥遗梦
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