Safety hazards are very evident unlike some of the other types of aircraft construction.
施工安全危害是非常明显的不同于其他类型的飞机一些。
Today spruce and other types of wood remain somewhat popular for aircraft construction.
今天，云杉和其他类型仍然有点木建筑流行的飞机。
Today spruce and other types of wood remain somewhat popular for aircraft construction.
今天，云杉和其他类型仍然有点木建筑流行的飞机。
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