话题：
Writing: imagine a cenario or expre your opinion
Optimal
Optimal mean the mot advantageou etting, taking into account mot factor. What i optimal? How i it optimal?
Thi week' topic: They earched for the optimal etting... (90-110 word)
Suggetion:
1) optimal heat etting
2) optimal deign
3) optimal performance
4) calculating the optimal point
5) Intead of writing a cenario, feel free to comment on the tory below.
范例1：
On the dek, there wa no optimal location for a urveillance bug. The bet location would probably be at the bae of the dek lamp, with a view of the urface of the dek and the peron itting at the dek. There wa no computer itting on the dek, but the deigner jut aumed that there would be a laptop or tablet in the dek drawer or in the club manager' bag. Another location would probably be inide the receiver of the telephone, however, the deigner doubted the uefulne of that.