新房子里有一道双重门，将家人的房间与我的家庭办公室分割开来。
We have a double doorway that divides the family room and my home office.
旅游史学是历史学和旅游学之间的一门新兴的交叉边缘学科，具有历史学和旅游学的双重性质。
The study on tourism history , the edge discipline between the history study and the tourism study , has double attributes.
一种双重机械密封地漏芯，由地漏芯上主体、浮子、地漏芯下主体和活动门组成。
A dual mechanical seal floor drain core is composed of an upper floor drain core body, a floater, a lower floor drain core body and a valve.
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