at one's sole discretion意思是“完全自由裁量权”，可译为“自主决定”，相当于in the sole discretion

例如：If such failure continues uncured for a period of thirty (30) calendar days after receipt of written notice of such failure, then such Limited Partner shall be considered in default and may, in the sole discretion of the General Partner, be designated a "Defaulting Partner".

如果在收到上述关于未出资的书面通知后三十(30)个日历天之内仍然未履行出资义务，则视为该有限合伙人违约，普通合伙人可以自主决定将其认定为“违约合伙人”。