O T T F F S S E N T 是什么?

x��)��W
B7 BW? �ٌ�Ov7<��ao�T�OH�~�� Q����lZ��Y-Ov4<���b|^�BHy�BHFQj��[~i��[fY�Bpf�BpjYj��kfzF��_&Haj��~qAb��^� H�