A Good Heart to Lean On (title)
Meaning: A good heart to depend on for support and encouragement. Notice that in this sense, "lean" is used with the preposition "on".
They always lean on us when they are in trouble. 他们有困难时总寻求我们的支持。
The minister leaned on his advisers for support. 这位部长依靠他的顾问支持。
n. 介词