no more than adv.只是；仅仅
Each class has no more than 8 students.
每个班级的学生不超过8个.
Most molecules live for no more than weeks at a time.
要知道大多数分子的寿命都不超过一星期.
The American Heart Association advises no more than 3 grams for healthy people.
美国心脏协会建议,对健康人来说,每天食盐不应超过3克.
以上,都有"只不过/仅仅"强调很少的意思.
not more than 就没有"很少"这种意思.只是客观上说,不多于...
not more than不超过；至多；不比…更…
And the earholes are not more than three.
还有耳洞不能超过三个.
Answer these questions in not more than 75 words.
回答以下问题,不要超过75个单词.
I have not more than three relatives in this city.
在这个城里,我至多只有三个亲戚.