argue against 反对
argue for 为……而争辩，赞成
argue with 和……争论
arm in arm 臂挽臂,手挽手
around the clock 昼夜不停, 连续一整天; 毫不疲倦地, 不松劲地
around the corner即将发生，近在咫尺，拐角处
arrive at a conclusion 得出结论
as (so) long as 只要；和……一样长
as … as possible 尽量……
as a consequence 因而，结果
