51. arise from(=be caused by) 由引起. 52. arrange for sb./sth. to do sth. 安排做 53. arrive on 到达; arrive at 到达某地(小地方);得出,作出; arrive in 到达某地(大地方); 54. be ashamed of (=feel shame, guilt or sorrow
1. abide by(=be faithful to ;obey)忠于；遵守。 2. be absent from. 缺席，不在 3. absence or mind(=being absent-minded) 心不在焉 4. absorb(=take up the attention of)吸引的注意力(被动语态):be absorbed in 全神贯注于近
