我感觉学习也要有一种技巧！希望可以帮到你！

{!-- PGC_VIDEO:{"thumb_height": 960, "vposter": "https://p3-sign.toutiaoimg.com/tos-cn-p-0000/761c22c41c45487ba0e1670a7a1886cc~noop.image?x-expires=1976285215&x-signature=8Yi6SdBAmqtJmG%2BEWgupufbJSck%3D", "thumb_width": 1280, "vid": "v02016470000bpgslk1pjc2jvek0nqlg", "vu": "v02016470000bpgslk1pjc2jvek0nqlg", "duration": 72.79, "thumb_url": "tos-cn-p-0000/761c22c41c45487ba0e1670a7a1886cc", "thumb_uri": "tos-cn-p-0000/761c22c41c45487ba0e1670a7a1886cc", "video_size": {"high": {"duration": 72.79, "h": 960, "w": 1280}, "ultra": {"duration": 72.79, "h": 960, "w": 1280}, "normal": {"duration": 72.79, "h": 960, "w": 1280}}} --}