In the way this word is used here, autarchy is an economic idea: a country tries to live from its own goods and food, and does not want or need to buy from other countries. People also use it for a country that follows that plan. It is a formal textbook word, not a word for daily chat. Though actually, English has made a mess of two close spellings. Autarky (with a k) is the spelling that matches ‘enough in ourselves’ more cleanly. Autarchy (with ch) is built from pieces that mean ‘self’ + ‘rule,’ so in some careful writing autarchy means absolute power — a ruler who answers to nobody. Many dictionaries still let autarchy stand for the economic meaning. If you meet the word, read the sentence: is it about trade and food, or about a strong ruler?

經濟自給自足（也指採這種政策的國家）。有人會把 autarchy 當「專制」；那是另一條意思。