例如，预定义指令as_lower_d将输入流转换为小写(参见清单6)。

For instance, the predefined directive as_lower_d converts the input stream to lowercase (see Listing 6).

youdao

FPGA上实现的，并可以根据实际需要增加硬件和自定义指令来提高系统性能。

FPGA, and we may add the hardware and define our specific instructions to accelerate system performance.

youdao

RK算法是一个非常有效的算法，它能够将谓词的使用和谓词定义指令的数目最小化。

The RK algorithm is an efficient algorithm which minimizes the number of predicate usages and number of define operations.

youdao

The colon is important It's defining the beginning of a block of instructions. Yes sir.

这个冒号很重要,是因为它定义了,一块指令的开始，有问题么？

麻省理工公开课 - 计算机科学及编程导论课程节选