In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

International direct dialing ( IDD ) or international subscriber dialling ( ISD ) is placing an international telephone call that is dialed directly by a telephone subscriber , rather than by a telephone operator .
International Direct Dialing ( IDD ) is an international telephone call dialed by the caller rather than going via an operator .

The Nymphalidae are the largest family of butterflies with more than 6,000 species distributed throughout most of the world , belonging to the superfamily Papilionoidea .
The Nymphalidae is the largest family of butterflies , with about 6,000 species .

The Massachusetts Bay Transportation Authority ( abbreviated MBTA and known colloquially as " the T " ) is the public agency responsible for operating most public transportation services in Greater Boston , Massachusetts .
The Massachusetts Bay Transit Authority ( usually called the MBTA or " the T " ) is Massachusetts ' public transportation system .