chéng / xù / huì / xiān / dú / qǔ / liǎng / gè / cāo / zuò / shù / rán / hòu / jì / suàn / tā / men / de / hé

程序会先读取两个操作数，然后计算它们的和。

The program first reads the two operands and then calculates their sum.