sign of operationsign of proportion运算: operation; arithmetic; opera ...记号: mark; sign; tick; designatio ...简算记号: abridged notation; contracted notation记号: mark; sign; tick; designation; symbolism; marking; sentinel; notation; [计算机] character; spot mark; token 做个记号 make a sign; mark out计算记录器: computing logger下载手机词典可随时随地查词查翻译
