na.一个一个,挨次; 一个一个地
网络 一个接一个; 挨个; 各个; onebyone
His friends became concerned. One by one, they asked him if he was able to drive home safely.
他的朋友有些担心了,一个个(Onebyone)都问他能否安全开车回家。
We buy the food onebyone.
我们依次购买食物。