后者通过设置刀轴矢量变化的阈值并采用集合碰撞体，实现了刀位的跳点检查和集合运算检查。

The second algorithm, depending on setting the threshold controlling tool-axis vector and using solid based on Boolean-operation, realizes unsafe CL-points and Boolean-operation check.

youdao

但是这种差分机只能做机械运算，而且不能检查结果以修改过程。

But the Difference Engine could only do rote calculations and was incapable of checking its results to alter course.

youdao

要避免任何数与 0 相除或溢出，将所有除法转换为乘法并检查运算符号（Y2=Y1 的水平线不会计入算法）

To avoid any division by zero or overflow, transform all division into multiplication and check for the sign (horizontal lines with Y2=Y1 do not count in the algorithm)

youdao

It caught the error, because it checked the types of the operands before it applied things and it says, I'm going to stop.

它捕捉到了错误，因为它在,进行运算之前检查了运算对象的类型,然后Python意识到，应该停止了。

麻省理工公开课 - 计算机科学及编程导论课程节选