That's great. I'll come back right after the formalities.
那太好了。手续办完后我就回来。
I'd like two seats on today's northwest flight 7 to detroit, please.
我想订两张今天西北航空公司7班次到底特律的机票。
is as the proportion of the total vocabulary of his mother tongue against those words of his own baby talk that are taken up into the vernacular of his family.