It was quite grueling, but very rewarding at the same time.

那真的很折磨人，但同时我也收获了许多。

youdao

The sun is scorching and on most days the temperatures are very high. also, the thin air, because of the high altitude, makes grueling conditions for running.

那里的太阳毒辣，且大部分时间是高温酷热的天气。再者，高海拔稀薄的空气也早就了跑步的严苛条件。

youdao

Those were really tough tours. They were kept out very often for up to three months, under some pretty grueling conditions.

VOA: special.2010.06.21

"This process is very grueling, but being able to be at Fashion Week is every woman's dream, " she said.

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Amanpour : Yes, Zarqawi came to prominence shortly after the invasion of Iraq, which was a successful invasion in the deposing of Saddam Hussein but quickly turned into a very grueling counter-insurgency operation that still continues.

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But that experience, through a long, grueling season, in a very tough division, I think it helps us.

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