You have worked hard! Teacher! People working hard in the heat and severe cold.
您辛苦了！老师！在酷暑严寒中辛勤工作的人们。
Heat environment has an obvious influence on workers health and working efficiency.
厂房的热环境好坏直接影响着工人的身体健康和生产效率。
Heat environment has an obvious influence on workers health and working efficiency.
厂房的热环境好坏直接影响着工人的身体健康和生产效率。
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