降至七年以来的最低点 dropped to a seven-year low
七年以来，一只鸟一直来同一个地方筑巢。
For seven years a bird had come and built her nest in the same place.
去年，英国离婚数量自七年以来首次上升。
The number of divorces rose for the first time in seven years last year.
在同一个季度，公司公布了七年以来头一次的净损失。
During that same quarter, the company reported a net loss for the first time in seven years.
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