Equipment must be supervised if children are in the house.如果孩子们在屋里，必须有人监管设备。He supervised and trained more than 400 volunteers.他指导和培训了400多名志愿者。The teacher supervised our drawing class.老师负责我们的图画课....
The architect supervised the building of the house.建筑工程师监督房子的施工。Equipment must be supervised if children are in the house.如果孩子们在屋里，必须有人监管设备。He supervised and trained more than 400 volunteers.他指导和培训了 400 多名志愿者。Learner dri...