be connected to意为“与……相连；与……有联系”，其后面可以接名词、代词或者动词的-ing形式。例如：The two houses are connected by a long corridor.（两座房子由一条长走廊相连。）The company is connected with many other businesses.（这家公司与其他许多企业有联系。）

be connected to的释义是：与...有关联；与...有联系。

例句：The two countries are closely connected to each other by land and sea.

两个国家在陆地和海上都有着密切的联系。

" be connected to" 的变化是"be connected with"和"be connected to each other" 。其中"be connected with"表示与某物有联系或关系，"be connected to each other"表示相互之间有联系或关系。