~を通じて・~を通して
Through a channel or throughout a period
You’ll be able to describe a means, intermediary, or an entire period in a formal way.

この旅を通じて、芽衣はいろいろな自然の不思議を学びました。
kono tabi o tsuujite, mei wa iroiro na shizen no fushigi o manabimashita.
What do you think this sentence means?
Through this trip, Mei learned about many wonders of nature.
Through an intermediary or across time
~を通じて/~を通して means “through” or “via.” It can name an intermediary or say that something continues throughout a period.
インターネットを通して、世界中の人と話せます。
intaanetto o tooshite, sekaijuu no hito to hanasemasu.
Through the internet, you can talk with people all over the world.
先生を通して、返事をもらいました。
sensei o tooshite, henji o moraimashita.
I got the reply through my teacher.
Use a channel or a whole period
Attach the pattern to a noun. With a person or organization, it means “through”; with a time period, it means “throughout.” ~を通じて is slightly more formal.
一年を通して、日本語を勉強しました。
ichinen o tooshite, nihongo o benkyou shimashita.
I studied Japanese throughout the year.
この町には、一年を通して多くの観光客が訪れる。
kono machi ni wa, ichinen o tooshite ooku no kankoukyaku ga otozureru.
Many tourists visit this town all year round.
駅の近くの不動産屋を通して、今のアパートを借りた。
eki no chikaku no fudousan'ya o tooshite, ima no apaato o karita.
I rented my current apartment through a real estate agent near the station.
部活を通じて、仲間と協力することの大切さを学んだ。
bukatsu o tsuujite, nakama to kyouryoku suru koto no taisetsusa o mananda.
Through my school club, I learned how important it is to work together with teammates.
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