几个门到门的部分组成，泵是易于维护。
Consisting of several unitized parts, the pump is easy to maintain.
专业经营：散货拼柜包清关包税门到门；
Professional Management: LCL less than container load with tax and clearance door to door;
所以在十五天，我们总是访问我们的亲戚从门到门。
So during the fifteen days, we always visit our relatives from door to door.
他们如何利用数据库，如何门到门地将房地产销售出去。
How do they use database, how to door to door to real estate sales out.
最后，在你打开任何一扇门之前，一定要感觉到门已锁上了。
Finally, before you open any doors, always feel the door lock first.
你可以学习到一门科学，同样也是一门艺术。
There is a science, as well as an art, and you can learn both.
他环顾四周，注意到一扇门，门后面挂着一幅画。
He looked around and took notice of a door, behind which hung a picture.
他环顾四周，注意到一扇门，门后面挂着一幅画。
He looked around and took notice of a door, behind which hung a picture.
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