De Burca说：在某些情况下，除了帮助孩子重返他/她那位于边远地区和难于到达地区的家庭之外，任何其它工作都是很困难和很昂贵的。

In some cases, it’s difficult and very costly to do more than return a child to his or her family in a remote and hard to reach area.

youdao

借助重力，在船中沿海而下是容易的；但在满潮时，到达后潮的升涨使双脚难于离开？

Going down to the sea in ships is easy enough with gravity's help, but at high tide the ascent upon arrival gives the legs a good mountain work out.

youdao