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1、must be available必须是可用的例句:1.At least one file must be available. 至少一个文件必须可用。

2、 2.For these technologies to make the jump from development labs and small trials to fulldeployment at airports they must be available at a price that airports are prepared topay. 因为要让这些技术跃出实验室的大门，从零星试点变为统一配备，其价格必须平易近人，维持在机场能够支付的水平。

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