This is the factory in which he works.
这就是他工作的工厂。
He works in a factory where (around which) the surroundings are very beautiful.
他在一个环境优雅的工厂工作。
The school in which he works was going to hold a sports meeting that day.
他工作的学校要举行那日子遇见的一项运动。
The school in which he works was going to hold a sports meeting that day.
他工作的学校要举行那日子遇见的一项运动。
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