be connected的用法例句如下：

1、The challenge? Develop an economical toilet that is doesn't need to be connected to a sewer system, or to any water or electricity grid.───设计这样一个经济型马桶的挑战是它无需连到排污系统，也无需连到任何供水网或电网。

2、They suggest that their result may be connected with the fact that the colour of many fruits is at the red end of the spectrum.───他们称这一结果是因为很多果实的颜色都处于光谱的红色那一头。

3、"We're right at the start of an opportunity for America to be connected with high-speed, intercity rail, " he said.───“为了用高速城市间列车将全美连接在一起，我们找到了一个正确的开端”。

4、In a graph, a vertex in a tree can be connected to any number of other vertices, provided that no cycles are created.───在图中，树的顶点可以连接任意数量的顶点，只要不存在环即可。

5、And I have to tell you that although millions doesn't sound like a lot in terms of the billions that need to be connected, it's a start.───我要告诉你们的是，尽管数百万听起来不算太多和需要被连接起来的几十亿的人数比较起来，这只是一个开始。

6、All of these diseases are believed to be connected to an inflammatory process initiated by the body's immune response.───所有这些疾病被认为是和机体免疫反应引起的炎症反应相关。

be connecting的用法例句如下：

1、Assuming we've configured everything correctly, only special trusted clients can even be connecting over this transport.───假设一切都已正确配置完成，则只有特定的受信任客户端才可以通过这一传输连接。

2、The phone must not be working in bypass mode, i. e. it must be connecting directly to the other extension.───手机必须工作在旁路模式，也就是说，它必须直接连接到其他分机。

3、Assuming you've configured everything correctly, only special trusted clients can even be connecting over this transport.───假设一切都已正确配置完成，那么只有特定的可信客户机才可以通过这一通道连接。

4、You'll often be connecting while you're writing, and optimizing can often involve improving your skills.───在写东西的时候要与他人联系，实现业务最优化时往往需要提升相关技能。

5、It is also important that you do not use an older libpq than the PostgreSQL Server to which you will be connecting.───不要使用比PostgreSQL服务器连接所接受更旧版本的libpq也很重要。

6、people be connecting up at higher speed through ISDN and PC cable Modems.───人们将越来越快地被诸如综合服务数字网、电脑调制器等联结起来。