Noun:

1. the straight line configuration of 3 celestial bodies (as the sun and earth and moon) in a gravitational system

SYSTn.系统(装置；方式；体制；次序；分类法)SYabbr.平方码(=square yard)abbr.主发动机偏转(=sustainer yaw)Systolic pulmonary arterial pressure肺动脉收缩压Sybase Enterprise SQL Server Manager企业级管理员参考手册syphilitic cardio-vascular disease梅毒性心血管病syphilitic secondary par-kinsonism梅毒性继发性帕金森氏综合征Syarikat Malaysia Explosives Sdn Bhd斯里兰卡马来群岛炸药systolic insufficiency heart failure收缩功能不全性心力衰竭Syzygium buxifolium Hook. et Am.超级阿拉伯大冒险systerm of strategic cost management战略成本管理体系Sysoptitle Talk Sysop access required需要管理员权限讨论本页Syringa reticulata var. mandshurica暴马丁香