📚 WordMate 词典

a. 波动的, 起伏的
vi. 波动, 起伏, 呈波浪形
vt. 使起伏, 使波动

v. increase and decrease in volume or pitch, as if in waves
s. having a wavy margin and rippled surface

过去式: undulated 复数: undulates 第三人称单数: undulates 过去分词: undulated 现在分词: undulating