This is an example USDA result from creating an Xform and Cube prim. Where the Cube prim is a child of the Xform and the Xform has it’s own Translation Ops.

#usda 1.0
(
    defaultPrim = "World"
)

def Xform "World"
{
    custom float my_float_attr = 0.1
    custom float3 my_vector_attr = (0.1, 0.2, 0.3)
}