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;
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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