Each gas line shall be clearly labeled (colour and written code) for every 1.5-meter distance. Labeling shall also indicate the direction of gas flow.
气体管路每隔1.5米的距离，都要有明确标示，同时指示气体的流向。
2
Normally, men who are not wearing a tie are not admitted to the club, but as you've only come to read the electricity meter that's a horse of a different colour.
一般而言，不戴领带的男子是不让进俱乐部的，不过因为你只是来抄电表的，那就完全是另一回事了。
3
The blooming gadget connects wirelessly to the home's electricity meter and changes colour and shape depending on the amount of electricity used.