concentrate on vs concentrate in

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Kaden

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imperialelisa

"7 years without any disappointment. Always 100% satisfied. You guys are the best in the world at what you do. Thank you so much :)"

Zubair Alam

"In a world of text messages and online communication, this is great to have as a live tool. Thank you."

Selena

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宏祐

"Accuracy and fast response. Personal comments from editor. Thank you."

Clh

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Arturo

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Vinicius Antonio

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ordinary

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Vehan

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mojtaba

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Tarisini

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Ente

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priiiyanshuu

"this helps A LOT for my studies."

"Woow!! I would never have expected such precision! Thank you soooo much!!"

Berta

"Real Time Editor and not AI. Many Thanks."

Priya

"The very first thing excites me about Textranch is how much your editors care."

sepideh

"The fact that texts are checked by human editors rather than by AI, etc. I appreciate this!"

Анна

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"This is the best app that I have ever seen"

Burulai