1.flows through 流过；流经

例句：The river flows through the city from west to east.
河流从东到西穿过这座城市。

2.at every opportunity 一有机会就

例句：She clutches at every opportunity to practise English conversation.
她抓住一切机会练习英语会话。
3.as well as 也；和...一样

例句：Boys as well as girls are taught cookery in school these days.
现在学校里男女学生都学烹饪。

4.Well-preserved 保养得好；保存完好

例句：Well-preserved fossils like this of Dimetrodon are rare, according to the researchers.
研究人员表示，保存如此完好的化石相当罕见。