D not less than
not more than的意思就是“不多于”“不超过”；
no more than主要强调more的反面,即强调数量之少或程度之低,
如说no more than 10 days,其意为“只有10天”,
no less than 说明︰此句型意为“多达…；足足有…之多”.等于“as many／much as ...”.
not less than 说明︰此句型意为“没有比…更少；至少与…一样”.等于“at least as ...as”.