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If you pass through the roads, you are figuring out which roads to use, when to use them, and essentially coming up with the route and course to take to get to wherever you're going.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
事前にGoogleマップで目的地までの経路をチェックしておいてくださいね！
Be sure to check the route to your destination in advance using Google Maps!
こういう小さい事件って、どういう経路でニュースになるんだろうね。
I wonder how these small incidents make their way into the news.
犯人がこのドラッグを入手した経路はまだ分かっていません。
The route through which the culprit obtained this drug is still unknown.
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