+ plus 加号；正号- minus 减号；负号± plus or minus 正负号× is multiplied by 乘号÷ is divided by 除号＝ is equal to 等于号≠ is not equal to 不等于号≡ is equivalent
+ plus 加号；正号- minus 减号；负号± plus or minus 正负号× is multiplied by 乘号÷ is divided by 除号＝ is equal to 等于号≠ is not equal to 不等于号≡ is equivalent
← ↑ → ↔ ↕ ↖ ↗ ↘ ↙ ⟵ ⟶ ⟷ ⟸ ⟹ ⟺ ⟻ ⟼ ⟽ ⟾ ↚ ↛ ↤ ↥ ↦ ↧ ↨ ↼ ↽ ↾ ⇀ ⇁ ⇂ ⇃ ⇄ ⇅ ⇆ ⇇ ⇈ ⇉ ⇊ ⇋ ⇌ ⇐ ⇑ ⇒ ⇓ ⇍ ⇎ ⇏ ⇔ ⇕ ⇖ ⇗ ⇘ ⇙ ⇤ ⇥ ⇵ ⇶ ⇷ ⇸ ⇹ ⇺ ⇻ ⇼。
你们说办事儿最讲究条理的德国人，怎么会在数数上留一个这么大的bug，每次读数的时候，脑子都仿佛有一个小人儿在跳皮筋儿:从第一个跳到第三个，再跳回第二个，然后跳到第四个，接着又是第六个，接着回到第五个...
