partly
adv. 部分地，在某种程度上
例句
He was only partly responsible for the accident.
他对这次事故只负有部分责任。
《牛津词典》
I'm partly to blame? What exactly are you getting at?
我应负部分责任？你究竟是什么意思？
The human organism learns partly by nature, partly by nurture.
人的学习能力部分是先天的，部分是后天培育的。
《柯林斯英汉双解大词典》
