I don't know how to do this job.请详细讲解其中的每一个语法知识点,

x����N�@�_�7/^��YC�
5�D�x"��?�!F-B�h�&�@)TƝ���+8m���������o�oF��‘R�S�Ӳr.��W|��qU8Q�yN�L��ƝW���9u���`D�n��/��lv�,N����Ių�PY���(��u����qN�} o��������4���������6Z�!�7