“挖坑于”可翻译为“dig a hole in” 或 “dig a pit in” ,“in” 表示在某个地点或范围内挖坑。例如:
They dug a hole in the backyard.(他们在后院挖了个坑 。)
He planned to dig a pit in the field for planting trees.(他计划在田地里挖个坑用来种树 。)