肩负

He is laden with heavy responsibility.

负重任。

64. When the disagreeables of life were in question, Rose instinctively took upon her, in addition to her own share, what she could of her sister's.

碰到生活上有什么不如意的事情，罗斯便自然而然地除了负自己的伤儿外，还尽能地承担她妹妹的份儿。