如果大学生在毕业之际都不发言，是什么现象呢?
都是正能量的对吧{!-- PGC_VIDEO:{"thumb_height": 360, "thumb_url": "2a9e10005b0218c4038ac "vname": " "vid": "v020162b0000bkm0d2jivfcsep26iqqg "thumb_width": 642, "src_thumb_uri": "2a9e10005b0218c4038ac "sp": "toutiao "update_thumb_type": 1, "vposter": "http://p0.pstatp.com/origin/2a9e10005b0218c4038ac "video_size": {"high": {"duration": 51.972, "h": 480, "subjective_score": 0, "w": 856, "file_size": 3895939}, "ultra": {"duration": 51.972, "h": 720, "subjective_score": 0, "w": 1284, "file_size": 8411387}, "normal": {"duration": 51.972, "h": 360, "subjective_score": 0, "w": 642, "file_size": 2455005}}, "md5": "64b1352f5afd6a4426b7079d4f3a318c "duration": 51.972, "file_sign": "64b1352f5afd6a4426b7079d4f3a318c "thumb_uri": "2a9e10005b0218c4038ac "vu": "v020162b0000bkm0d2jivfcsep26iqqg"} --}
