recharge trenches

• 补给沟渠

recharge trenches的用法和样例：

例句

1. Students also helped dig trenches for the installation of white PVC pipe, though villagers are doing most of the digging.
   学生们也帮忙挖沟渠来铺设安装白色的聚氯乙烯管子，虽然大部分的挖掘工作是村民在做。
2. There, in the holy trenches, he will be shown graduate students with serious sunburn working the earth with dental picks and dustpans.
   在那些神圣的沟渠里，人们会给他看被太阳晒黑的研究生们用微型锄头和畚箕处理泥土。