second operand

基本解释

Then Click the icon to the right of the second operand?
然后单击第二个 operand?
The closure rMultiply is a partial application that adapts the binary multiplication to be a unary closure by using a constant second operand.
闭包 rMultiply 是个局部应用程序，通过使用一个不变的第二操作数，把二元乘法改变成一元闭包。
The first operand is the format string, which contains one or more format sequences, which specify how the second operand is formatted. The result is a string.
第一个运算对象也就是说明格式的字符串，包含一个或者更多的格式序列，规定了第二个运算对象的输出格式。返回的结果就是格式化后的字符串了。