When he had turned the Angle of the gallery, the distant glimmer of an air-hole disappeared, the curtain of obscurity fell upon him once more, and he became blind again.
当他转过了巷角以后，远处通气洞的光线就消失了，黑幕又在他前面落下，使他再次失明。
2
Suddenly, there appeared a hole in their nest. The cold wind blew in through the hole and got away the warm air from the nest.
突然，他们的巢里出现了一个洞。冷风从洞里吹进来，把巢里的暖空气吹走了。
3
Given a lattice symmetry, larger absolute photonic band gap was achieved by selecting an airhole shape of the same symmetry.