A son and his wife and their three children--my grandchildren.
有个儿子, 还有儿媳妇以及他们的三个孩子,我的孙儿女们。
And I got it on sale.
我在大减价时买的。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.