Here's the stuff we found when you searched for "[bei1] /carry on one's back/ [bei1] /to be burdened/to carry on the back or shoulder/ [bei4] /learn by heart/the back of the body/"

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[bei1] /to be burdened/to carry on the back or shoulder/

[bei4] /learn by heart/the back of the body/" node. If you don't already have an account, you can register here.