他们踏上环游世界的第一段行程。
将它在杆子或木头上环绕半圈。
请注意公交车上环境，禁止吸烟！
他花了三天对这个国家进行了一次陆上环游。
It took him three days to make an overland journey around the country.
目前，我国已经是世界上环境形势最为严峻的国家之一。
At present, the environment problem in China is one of the most serious in the world.
列车到达车站往上环列车即将到站，请先让乘客落车，多谢合作。
The train to Yau Ma Tei is arriving; Please let passenger exit first, thank you.
列车到达车站往上环列车即将到站，请先让乘客落车，多谢合作。
The train to Po Lam is arriving; Please let passenger exit first, thank you.
城市污水污泥的处理处置已成为目前世界上环境科学研究领域中的重要问题。
The disposal of sludge has become an important problem in the area of environmental science.
城市污水污泥的处理处置已成为目前世界上环境科学研究领域中的重要问题。
The disposal of sludge has become an important problem in the area of environmental science.
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