她估计湖面大约有500米宽。

She estimated the breadth of the lake to be 500 metres.

《牛津词典》

她估计，去一个陌生人的家是一个冒险的举动，但她还是决定抓住这个机会。

She calculated that going to a stranger's house was a risky move, but she decided to take the chance.

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她估计，英国和瑞士可能采取这种做法。

Among those likely to do so are Britain and Switzerland, she reckons.

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