1·If the character is an operand, push it onto the stack.
如果字符是一个操作数，把它压入堆栈。
2·The compiler supplies the appropriate operand in the assembly language code it generates.
编译器在自己生成的汇编语言中提供了适当的操作数。
3·The purpose of this method is to store the currently displayed number into the accumulator, to store the specified operation as well, and to reset the display for input of the next operand.
此方法的目的就是：将目前所显示的数值存储到此累加器、存储特定的操作以及为了下一个操作数的输入而重置显示。
4·Bytecodes describe calculations using a theoretically infinitely large operand stack.
字节码使用一个理论上无限大的操作数堆栈来描述计算。
5·Use of memory operand constraint.
内存操作数约束的使用。
1·In particular, if one operand is a string and the other a number, the string will be converted to a number and the two operands then compared numerically. This can lead to subtle errors.
特别是，如果一个运算对象是字符串，另一个是数字，那么字符串将被转换为数字，然后再对两个数字进行数值比较。
1·If the second operand is a Point, the method should return a new Point whose x coordinate is the sum of the x coordinates of the operands, and likewise for they coordinates.
如果第二个运算数是一个Point，该方法就应该返回一个新的Point，新点的横纵坐标分别为两个点坐标相加。