Their work can be dangerous and difficult. At sea for up to a year, they may face loneliness, isolation and exploitation.
海员在艰险的环境下工作，经年累月航行，忍受孤独，还可能受到剥削。
Mineral resources exploitation must face the pressure of the eco-environment and difficult issues to solve the problems.
现阶段矿产资源开发面临着生态环境压力大与解决矿区生态环境问题难度大的双重问题。
Mineral resources exploitation must face the pressure of the eco-environment and difficult issues to solve the problems.
现阶段矿产资源开发面临着生态环境压力大与解决矿区生态环境问题难度大的双重问题。
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