moreover,what's more 都有“此外,而且”的含义 adv.但有轻重之分.
moreover：多为补充说明,前面所说的及后面所补充的是并列关系,就是补充未说完的话.
例子：Moreover,the researchers discovered that these two connections were independent of each other.此外,研究人员发现,这两个联系是彼此独立存在的.
what's more ：而且；更重要的是；另外.不但补充未说完的话,而且含有递进的含义.
例子：What's more,obstructive sleep apnea has been shown to affect the cognitive abilities and behavior of children with the condition.
不仅如此,有证据表明,阻塞性睡眠呼吸暂停综合征会影响儿童的认知能力和行为方式.
参考他人.
