精雕细琢的包层揭示了隐藏在白色外表后的功能：学校，运动中心，广场和停车场。
This carved envelope unveils the functions sheltered behind this white outer skin: the school, the sport centre, its square and the car parks.
由于采用的N层掺稀土离子环芯光纤存在一个共同的中心包层区，因此极大提高了泵浦效率。
Because the adopted N layers of rare-earth ion-doped ring-core optical fibers exist in a common central cladding region, the pumping efficiency is greatly improved.
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