Gas supplies in the Cook inlet-which used to mean cheap energy for alaskans-are running out.
从库克湾输出的天然气曾一度是阿拉斯加最廉价的能源，但现在库克湾的天然气也近于枯竭。
The Summer Palace, which used to be a royal garden, is my favourite park.
颐和园是我最喜欢的公园，它以前是座皇家园林。
I come from a city in Illinois which used to have three big steel plants.
我的老家是在伊利诺伊州的一个城市。那里原来有三个大钢铁厂。
However, deleting the reference and fixing the code which used it is always an option.
不过，始终可以通过删除该引用并修复使用它的代码来进行恢复。
The city which used to ____ heavily ____ traditional energy is now seeking ways to use ____ energy.
这座曾严重依赖传统能源的城市如今在寻求利用替代能源的方法。
The city which used to ____ heavily ____ traditional energy is now seeking ways to use ____ energy.
这座曾严重依赖传统能源的城市如今在寻求利用替代能源的方法。
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