ATRCn.反跟踪操作装置
atprep.在;向;达n.基普(老挝货币基本单位)(=att);[化]砹(极不稳定放射性元素)abbr.密封的(=airtight)abbr.气温(=air temperature)
Athyrium attenuatumn.剑叶蹄盖蕨
at one's invitation白质纤维束
atriocommissuropexy二尖瓣固定术
at the first setout最初, 一开始
at hourly intervals每隔一小时
at the peep of dawn在黎明时分
attitudinal changes学习态度变化
at a rough estimate据大致估计
at the bare idea ofadv.想起