High electricity bills point to a poor heating system or badinsulation.
高额的电费账单表明供暖系统较差或者是隔热材料不好。
《柯林斯英汉双解大词典》
2
If air conditioner fluid, tracheal insulation is bad, can also cause the refrigeration, adverse effect.
若空调器液、气管保温不好，也会引起制冷、制热效果不良。
3
The general failure model and mechanism of circuit break, loose contact, instant break, male insulation, short-circuit, false matching, poor fix and bad seal were discussed.