Engineer call alarm system is intend for the communation and alarm equipment of vessels.
轮机员报警系统用于船舶上通讯报警系统设备。
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The new teaching material regards training students' communication ability as object, and to "say" it is the most direct communation means.
新教材以培养学生的交际能力为目的，而“说”是最直接的交际手段。
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