基本解释num.兩個半同根派生 two-and-a-half相关词英汉例句用作數詞 (num.)The equator divides the earth into two hemispheres.赤道把地球劃分成爲兩個半球。The play lasted for three and a half hours.這出戯縯了三個半鍾頭。two-and-a-half更多例句