1.believe in相信;信奉
If they really believe in this then they must be completely out of touch.
如果他们真的相信这一点,那么他们肯定是完全与现实脱节了 。
2.go off停止运转;进展
As the water came in the windows, all the lights went off.
随着水从窗子漫进来,灯全部熄灭了 。
3.weigh up权衡
You have to weigh up in your mind whether to pursue the matter or not.
你心中必须权衡一下此事是否要继续进行 。