no less than 和no less ... than的区别

no less than 不少于
no less ... than（不比谁少，但表示和谁一样多）

no less than 和no less ... than的区别
主要在语法方面,意思基本相同:

举例: 她的美不亚于其姐:
Her beauty is no less than that of her sister; or
She is no less beautiful than her sister.

例二:
中国的经济不弱于美国:
The Chinese economic strength is no less than that of the American; or
China is no less economically strong than America.

not less … than = 不如……不 (即指不如 less 后形容词的反面)
no less … than = 和……一样 (肯定两者)
下面是例句

1.You are less careful than he is. 你不如他仔细（你比他粗心）。
2.You are not less careful than he is. 你比他仔细（你不如他粗心）。
3.You are no less careful than he is. 你和他一样仔细。