To insert translations for a new model using a data file in Odoo 16, you can use the following format:

Copy code
    noupdate="1">
        
        id="test_model_name_en" model="test.model.name">
            name="lang">en_US
            name="value">Field Name
        

        
        id="test_model_name_fr" model="test.model.name">
            name="lang">fr_FR
            name="value">Nom du champ
        
    

In this example, the element with the id attribute "test_model_name_en" creates a translation record for the English language, and the element with the id attribute "test_model_name_fr" creates a translation record for the French language. The elements within each record specify the language code and the translated value for the field.

You can add as many translation records as you need for different languages and fields. Just make sure to use a unique id attribute for each record and to specify the correct language code and value for each field.

I hope this information is helpful. If you have any further questions or need additional guidance, please don't hesitate to ask.