a flow一个流
aart.一(个);每一(个);任一(个)n.英语字母表的第一个字母;学业成绩得优者;表示“最好”的符号
a substantial change/improvement重大变化/改进
a penetrating gaze/look/stare洞察一切的凝视/目光/注视
a barrel/bottle/glass of beer一桶/一瓶/一杯啤酒
a cordial and friendly conversation亲切友好的谈话
A retired Welsh Rugby international退休的威尔士橄榄球队国际选手
A.C-D.C electric transmission交直流电传动
A compound that contains ammonia.氨化物含有氨的化合物
A fortified center of operations.中心设防的操作中心
a victory against overwhelming odds以弱胜强
a high-risk surgical procedure.危险的外科手术程序