never before
从未；从来没有
例如：
So much energy has never before been contained in a bottle. You had betternot touch it, one can never know what consequences it might have.
如此多的精力从未被包含在一个瓶子。你最好不要动它，可以永远不知道它可能有什么后果。
Many of these proposals had never before been used in Egypt.
许多建议的方法都从来没有在埃及使用过。
Never before had the world seen such a movement. It was a never-ending stream. Towns grewand villages sprang up almost overnight.
这个世界从未见过这样川流不息的迁徙，几乎一夜之间，城镇村镇如雨后春笋般的兴起。
Believed to have been a great luxury, such a dish has never before been discovered in the former western Roman Empire.
该碗据信是一个大奢侈品，像这样的餐具在前西罗马帝国时期从未发现过。
She had never before made any allusion to the flowers, and he supposed she had never thought of him as thesender .
她过去从未提到过这些花，他以为她绝对不会想到花是他送的。
