工程师通常会沿预定路线挖出浅浅的壕沟或土坑，取得海堤用的泥土。

Engineers then typically dig out shallow trenches or pits along the path to obtain earth for the levee.

youdao

工程师通常会沿预定路线挖出浅浅的壕沟或土坑，取得海堤用的泥土。

Engineers then typically dig out shallow trenches or pits along the path to obtain earth for the levee.

youdao