These front-line defences are backed up by armoured units in reserve.

前线防御有后备装甲部队的支援。

《柯林斯英汉双解大词典》

Under one model the insurance pool would function like a reserve fund, offering participants a short-term credit line they could call upon during a crisis.

在一种模式下，保险库可起到储备基金的作用，为参与者提供短期信贷，在危机到来时便可向其求助。

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The major U.S. investment Banks merged, failed, or sought a life-line from the Federal Reserve as newly converted bank holding companies.

美国的主要投资银行合并、破产或者以转变成新的银行控股公司的方式向美联储寻求生路。

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The prize rewards efforts to provide for the integrated management of a biosphere reserve in line with the recommendations of the Seville Strategy.

UNESCO: Apply for UNESCO Prizes

"Our study would strongly suggest that it is not beneficial to do it as front-line treatment but to reserve it as second-line or salvage therapy, " said study leader Dr. Mark Gilbert of the University of Texas MD Anderson Cancer Center in Houston.

NPR: Avastin Fails Studies In New Brain Tumor Patients

They are in better shape than others in the region, such as Australian banks, which have seen interbank funding costs soar, leading the Federal Reserve to open a dollar swap line this week with the Reserve Bank of Australia.

ECONOMIST: A bank run in Hong Kong