我们先挖坑，然后两个人合作，一个扶着小树苗，一个培土。

Then two persons were needed to plant a tree. One held the sapling carefully and the other put the soil in.

youdao

我们先挖坑，然后两个人合作，一个扶着小树苗，一个培土。

Then two persons were needed to plant a tree. One held the sapling carefully and the other put the soil in.

youdao