Having served its purpose in helping the plant to reproduce, 帮助植物繁殖的目的达成之后
their hard exoskeletons had served as useful armor underwater. 坚硬的外骨骼在水下是有用的护甲
You have served the realm long and faithfully. 长久以来您为国效命,尽忠职守
You've served as a glorified bodyguard for two kings 为前后两朝国王担任高级护卫
and so it's first come, first served. 所以先到先得
It's a case of first come first served. 先来先得