previously meaning in Chinese

先前地
在前地，早先地
在以前

This is similar to fluorimetry as previously discussed .
它类似于前面讨论过的荧光测定法。
The subjacent and lateral strata previously have been compacted .
下卧层和旁侧层先已压实。
But nobody had previously worked out a theory about magnetism .
但还从未有人研究出磁学理论。
Astronomers had not previously needed to devise such a mechanism .
天文学家无需急于去探寻这种机理。
Prices were previously expected to be constant at the old level .
以前价格预期在旧的水平上保持不变。

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