基本解釋n.周期名詞period的復(fù)數(shù)形式.同根派生 periods相關(guān)詞英漢例句用作名詞 (n.)The bitch's cycle is divided into four periods.母犬的發(fā)情周期被分為一下四個階段。Timer must be disabled when graphing readings for extended periods.當(dāng)在觀看較長周期的圖形和讀值時，必須關(guān)閉定時器。periods更多例句