Ms Valla argued, however, that by sticking largely to using policy instruments already in its armoury the ECB had forgone potentially far higher margins.
但瓦拉称，由于该行主要是坚持使用常规的政策工具，
弃了有可能高出很多的利润率。
（Event Control Block）；
境保护局（Environ-mental Conservation Board）Ms Valla argued, however, that by sticking largely to using policy instruments already in its armoury the ECB had forgone potentially far higher margins.
但瓦拉称，由于该行主要是坚持使用常规的政策工具，弃了有可能高出很多的利润率。
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