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The connectors "map" to the available transport types and the modes of connection.
连接器 “映射”到可用的传输类型和连接模式。
youdao
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There are many types of mail, through shipping or air transport.
邮寄方式有很多种，通过船运，或者航空运输。
youdao
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There are many types of mail, through shipping or air transport.
邮寄方式有很多种，通过船运，或者航空运输。
youdao