The rationale for this rule is that you cannot distinguish an inherited work item from a direct one at first sight.
此规则的基本原理是您不能立刻从直接工作项中区分继承的工作项。
2
Motion across the line of sight can be followed by direct observation.
与视线垂直的运动可以通过直接观测得到。
3
By direct rapid smear method, contracted Sight-scale clock method and breeding of fecal flora, the fecal flora from 82 cases of different age groups were observed.