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The responsibility chain pattern describes how requests are passed along a chain of objects. It forms objects into a chain, and the sender sends the request to the first receiver of the chain and passes it along the chain until there is an object to process it or until there is no object to process and it remains at the end of the chain.The children of migrant workers are also the treasures of their parents' hearts, the flowers in bud and the expectations of the country's future. However, their environment and understanding education have to make people worry about their future. Migrant workers and their children deserve respect and equal treatment. Schools for children of migrant workers also need more social attention, government support and help from you, me and him.王翠翘托腮思考片刻后说道：我认为可以试一试。1. Straight-to-the-point approach上海少年杨一杉，为了追求独立生活，满怀热情远赴东北求学，与东北女孩赵多多不打不相识。与此同时把一杉从小带大的姑妈不放心侄子来陪读，多爸赵解放成了她的房东。多多一心想撮合两个长辈，于是带领一杉站在同一“战线”。在众人推动下，姑妈孤独了多年的心被善良真诚的赵解放融化着，而两个年轻人也从互相看不顺眼，到对彼此动心，成了一对欢喜冤家。(3) If the delay requirement is high, the optional time relay or electric time relay can be selected; If the delay requirement is not high, the air damping time relay can be selected.