It was his father's shell, the OARS going in a fierce, even rhythm, biting the water, going upstream.
那是他父亲的小船，划桨的节奏匀称有力，吃水很深，正在往上游划。
2
Since 1970s, the vibroflotation technique was introduced into China for soft foundation strengthening with better results but without application in upstream slope in sanded shell dams.