同学你好，该知识点来自沪江网校《英语零基础直达大学六级【随到随学班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
not least 尤其是，特别是
Everyone is more reluctant to travel these days, not least the Americans.
这段时间大家都减少了出游的欲望，美国人尤其如此。

not the least一点也不，可以修饰名词作定语
The reactionary officials took bribes insatiably, giving not the least care to the future of the nation.
反动官僚贪贿无艺，根本不把国家前途放在心上。

not in the least 毫无; 毫不，可以作状语
We feel quite free and easy with him, not in the least constrained.
跟他在一起很随便，一点儿也不拘束。

祝同学学习进步~