| 摘要 |
A seating arrangement comprise a seat base. A seat back extends upwardly from the seat base. A backrest is displaceably arranged relative to the seat base between a first, retracted position in which the backrest is substantially in register with the seat base and a second, extended position in which at least a part of the backrest protrudes upwardly beyond a top edge of the seat back. A displacement mechanism is arranged between the seat back and the back rest, the displacement mechanism effecting displacement of the backrest from its first position to its second position.
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