The switches are available in several configurations, with 2 normally open contacts, or 1 normally open and 1 normally close contact.

开关可以有不同的结构，可以有两个断开接点也可以有1个断开接点和1个闭合接点。

youdao

Since cave dwellers normally lived close to entrances, there must have been some reason why so many generations of Lascaux cave dwellers hid their art.

鉴于穴居人一般都居住在洞口附近，因此，拉斯科岩洞许多代穴居者隐藏他们的艺术作品，其中必定存在某些原因。

youdao

If little close work is done, this elongation process normally stops with only a slight amount of farsightedness left.

如果轻度的近距离工作，只要轻度的远视调节，这个伸长过程就可以正常停止。

youdao

The American pressure on Mr Netanyahu has strained normally close Israel-US ties.

BBC: Israel-US settlement deal 'close'

It meant equipment that would normally automatically close the barriers had been switched off and was being operated manually by an attendant at the crossing.

BBC: Ufton Nervet level crossing

Wildlife experts have said the sighting of the normally-shy deer so close to a built-up area is "extremely rare".

BBC: 'Shy' deer with sheep near homes in Lancashire