"the burden of responsibility"
"that's a load off my mind"
"He charged her with cleaning up all the files over the weekend"
Why do you burden yourself with your sister's dog?
你何必自找麻烦为你姐姐的狗所累呢?
He burdened himself with a heavy overcoat.
他给自己加一件厚大衣。
She was burdened with a large quantity of parcels.
她吃力地捧着一大堆包裹。