You'll find preened moustaches, pretentious glasses, a range of characters and personalities.
你会找到洋洋自得的小胡子、自命不凡的眼镜男以及一堆个性迥异的人。
The rare earth doped fluoride glasses can be made into favorable optical fiber lasers owing to their excellent upconversion characters.
利用稀土离子在氟化物光纤中的上转换特性，可以获得性能优良的光纤激光器。
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