华为p30pro怎么反向充电（华为P30）

{"rich_content":{"text":"科技说明书：华为P30 Pro反向充电篇","spans":null},"video":{"vid":"v028b0400000bpdnkqg9lr7bt5aq4nb0","duration":15.883,"width":480,"height":270,"file_size":192043,"thumb":{"web_uri":"tos-cn-p-0000/451115f4afa84343981248cfc8438476","width":480,"height":270,"image_type":null,"mimetype":null,"encrypt_web_uri":null,"secret_key":null,"encrypt_algorithm":null,"extra":null},"video_size":{"normal":{"duration":15.883,"file_size":402119,"w":480,"h":270}},"is_encrypted":null,"md5":"88a213f25490652a203f3a5e0783d915","tos_key":null,"secret_key":null,"encrypt_algorithm":null,"extra":null}},