In recent years an external measurement system for First-Class Mail has been developed and one now exists for Priority, but actual service levels for most other subclasses have been a great unknown.
Other than First-Class and Priority, the actual service levels of most other subclasses isn't known.
There is a detailed systems for measuring the service levels of all classes of mail.
a model taking pictures.
Two boys hold up a tie.
The women have something on the plates.
I didn't go to six foreign countries.
Casa de la Obra Paa is strikingly pitch-black in color.
Paella is prepared in advance for dinners.