infancy侵蚀: corrode; erode幼年: childhood; infancy期: designated time侵蚀旋回: cycle of erosion; erosion cycle; erosional cycle; geographic cycle河流侵蚀旋回: fluvial cycle of erosion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:侵蚀旋回幼年期，即可在微信中查询翻译
