agitation  n. 搅动,摇动;激动,忧虑  She was in a state of agitation. 她处于激动状态。  n. 鼓动,煽动  agreeable  adj. 令人愉快的  She has an agreeable voice. 她的嗓音悦耳。  [同]pleasant  adj. 易相处的  [同]compatible  adj. (欣然)同意的  I’m agreeable to doing what you suggest. 我乐于照你的建议去做。  alas  int. (表示悲痛、遗憾等的惊叹声)哎呀,唉  album  n. 相册,集邮册,签名纪念册;唱片簿,唱片集  alert  adj. 警惕的,警觉的  be alert in answering questions 留心回答问题  [同]watchful  adj. 机灵的  [同]clever  n. 注意,提防,小心  They are always on the alert for traffic signals. 他们总是很留心交通信号。  n. 警戒,警报,戒备状态  [难点]  be alert to sth. 警惕…  be on the alert for / against sth /to do sth. 警惕…,随时准备着做…