sublight meaning in Chinese

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looking into the problems of sublight sounds in the proficiency test of mandarin
普通话水平测试的次轻音问题
trailing from the shield is a 400-meter pylon with a drive tug that provided sublight and hyperdrive thrust
盾上拖着一个400米长的柱子，上有驱动拖缆提供亚光速合唱光速推动力。
inefficient power generators resulted in slow sublight and hyperdrive performance, weak shielding, reduced firepower and frequent surges within the computer systems
低效的能量反应堆使它的亚光速和超光速表现不好，护盾脆弱，火力不强，计算机系统时常冒泡。
my first name is xi, it means the first sublight of a day, my father gave me this name, expect my future will full of hope like this sunlight and to bring felicity to everyone surround me
我的名字是曦,晨曦,如同早上的第一屡阳光,我父亲给我这个名字,祝愿我的未来如这屡阳光般充满希望,并且把幸福带给身边的每个人