He flew along unfrequented alleys.
他飞快地穿过冷冷清清的小巷。
To get a true picture of nature, he picked/chose mountains with treacherous pathsand unfrequented jungles for explorations, discovering many grotesque mountains and beautiful sceneries.
为了弄清大自然的真相，他总是挑选道路艰险的山区，人迹稀少的森林进行考察，发现了许多奇山秀景；
To get a true picture of nature, he picked/chose mountains with treacherous pathsand unfrequented jungles for explorations, discovering many grotesque mountains and beautiful sceneries.
为了弄清大自然的真相，他总是挑选道路艰险的山区，人迹稀少的森林进行考察，发现了许多奇山秀景；
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