in one造句

We are in one of the most severe recessions in modern times.
我们正在经历现代最严重的一段经济衰退。

They used to buy ten kilos of beef in one lump.
他们过去常买10公斤重的整块牛肉。

Many children are now born into or raised in one-parent families.
现在很多孩子在单亲家庭中出生或成长。