作图要求：临摹下图
参考图：来源：https://ts1.cn.mm.bing.net/th/id/R-C.bfe478f11e8e32efb45ac60af6760473?rik=TAWBRNiUEQFrhQ&riu=http%3a%2f%2ffiles.cn-healthcare.com%2fupload%2f20201027%2f18781603767390941&ehk=hEUmpF060G%2bphh1Un4zFAC89sktk0FfB1FP%2b0A807vg%3d&risl=&pid=ImgRaw&r=0
来源：https://ts1.cn.mm.bing.net/th/id/R-C.bfe478f11e8e32efb45ac60af6760473?rik=TAWBRNiUEQFrhQ&riu=http%3a%2f%2ffiles.cn-healthcare.com%2fupload%2f20201027%2f18781603767390941&ehk=hEUmpF060G%2bphh1Un4zFAC89sktk0FfB1FP%2b0A807vg%3d&risl=&pid=ImgRaw&r=0
