Definition: a large hole which has been dug in the ground Level: C2
他们挖了一个大坑来埋垃圾。
They dug a big ___pit to bury their garbage.
创建一个堆肥坑是回收厨房废物的有效方法。
Creating a compost ___pit is an effective way to recycle kitchen waste.
建筑工地上有一个用于地基的深坑。
The construction site had a deep ___pit for the foundation.
