报告不频繁的检举员必须接受补习。
Those who don't report frequently must undergo remedial training.
报告不准确的检举员将失去检举资格。报告不频繁的检举员必须接受补习。
Spotters who make inaccurate reports lose their spotting privileges. Those who don't report frequently must undergo remedial training.
检举员必须接受数小时的培训，才能掌握以“哈特·里奇烟度单位”(Hartridge unit)计算的“烟浓度”之类的概念。
Spotters must take hours of training to master such concepts as smoke density, measured in 'Hartridge units.
应用推荐