Etiquette mavens say one need not clink glasses with everyone present when participating in toasts among large assemblies.
礼节上在现在当一个人参加一个大聚会时不需要和每个人碰杯。
This approach leads to large, heavy and complex optical assemblies and a higher manufacturing cost for specialized optics.
这种方法导致了光学组件变得更大、更重而且趋于复杂化，光学制造成本较高。
Aerostaff Australia is a component manufacturer of high-precision aircraft components and assemblies for large aerospace original equipment manufacturers.
Aerostaff澳大利亚是一个大型航空航天原始设备制造商和高精密飞机部件的制造商。
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