rill英 [rɪl]美 [rɪl]n. 细沟v. 像小河一般流复数:rills 过去式:rilled BNC.40583 / COCA.33840牛津词典noun细沟a shallow channel cut by water flowing over rock or soil英英释义nouna small channel (as one formed by soil erosion)a small streamSynonym:rivuletrunrunnelstreamlet双语例句