相比之下pinyinxiāng bǐ zhī xiànumericxiang1 bi3 zhi1 xia4wadegileshsiang¹ pi³ chih¹ hsia⁴bopomofoㄒㄧㄤ ㄅㄧˇ ㄓ ㄒㄧㄚˋromatzyhshiang bii jy shiahby comparison