补充箭头-A字符Supplemental Arrows-A U+27F0 - U+27FF ⟰U+27F0 ⟱U+27F1 ⟲U+27F2 ⟳U+27F3 ⟴U+27F4 ⟵U+27F5 ⟶U+27F6 ⟷U+27F7 ⟸U+27F8 ⟹U+27F9 ⟺U+27FA ⟻U+27FB ⟼U+27FC ⟽U+27FD ⟾U+27FE ⟿U+27FF