You are solely responsible for it.
你一个人对那件事负责。
He was actuated solely by greed.
他完全是受了贪欲的驱使。
The responsibility lies solely with them.
solely
adv.
独自; 完全; 单独
solely for art's sake
只为了艺术
He is solely responsible.
他独自负责。
这完全得由他们负责。
Don't judge people solely by the appearance.
不要以貌取人。
He often went out solely at night.
他晚上经常独自外出。
I did it solely for his sake.
我完全为了他才做那件事。
navigation of an airplane solely by instruments.
单独的用仪器导航的飞行。
参考资料:http://www.iciba.com/search?s=solely