她检查克里斯蒂的作业。每当她的爸爸因为在消防站值班而不能参加学校里召开的家长会时，她便前往参加。
She checked Kristen's homework and attended her class open houses whenever her dad couldn't make it because he was on duty at the firehouse.
壁面移动机器人属特种作业机器人，在核工业、石化企业、建筑行业、消防部门、造船等领域均有广泛的应用，自二十世纪六十年代出现以来，一直受到世界各国的关注。
As a special type of working robot, wall-climbing robot has been used in many areas, such as nuclear industry, petrifaction enterprise, building industry, fire fighting and ship building etc.
吊车、消防车、钻探车等从事专门作业的车辆使用10年。
For cranes, fire engines, drilling vehicle and other vehicles engaged in special operations, the standard usage life is 10 years.
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