undulate波: wave状: form; shape的: 4次方是 The fourth power of 2 i ...起伏: rise and fall; ups and downs ...波状起伏的,正弦波状的: sinuous下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:波状的;起伏的,即可在微信中查询翻译