单词系列：短语

• beat on, 扑向，奋力前行
• boats against the current, 逆流而上
• bear back, 倒回， 退回

例如： So we beat on, boats against the current, borne back ceaselessly(不停地) into the past. 于是我们奋力地逆水行舟，又注定要不停地退回。